From TARDIS Index File, the free Doctor Who reference.

This article is about the Time Lord physiological process. For other uses of Regeneration, see Regeneration (disambiguation)

Regeneration was the process by which Time Lords (and a few other life-forms) could renew themselves by complete physical change, either at will or because of near-fatal illness or injury.

Contents 1 Background 1.1 Process 1.1.1 Appearance 1.1.2 Physical and mental change 1.1.3 After-effects 1.2 Limitations 1.2.1 The regenerative cycle 1.2.2 Attitude toward regeneration 1.3 Control over regeneration 1.4 Difficult or unusual regenerations 1.4.1 Regnerative difficulty 1.4.2 Meta-Crisis 1.4.3 Cross-species transformations 1.4.4 Aborted Regeneration 1.5 Scientific explanation 2 Specific regenerations 2.1 Time Lords 2.1.1 The Doctor 2.1.2 The Doctor's last words 2.1.3 Alternate Doctors 2.1.4 The Master 2.1.5 Romana 2.1.6 Rassilon 2.1.7 Borusa 2.1.8 Azmael 2.1.9 Jenny 2.1.10 K'anpo Rimpoche 2.1.11 Iris Wildthyme 2.1.12 Rallon 2.2 Humans 2.2.1 The Brigadier 2.2.2 Chris Cwej 3 Behind the Scenes

Background

Process

Appearance

During a regeneration, the body often shines with milky white light also known as bio-energy (DW: Logopolis, Time and the Rani, Doctor Who) or with a violent-seeming great discharge and torrent of golden bio-energy. (DW: The Parting of the Ways, Utopia, The Stolen Earth, The End of Time) In other cases, there was no visible energy discharge. (DW: Planet of the Spiders, Destiny of the Daleks)

Just prior to his ninth regeneration, the Doctor warned his companion to keep away from him (during a partial regeneration, Jack did this as well). This would seem to imply that the energy released during the process posed some level of danger to Humans, and possibly that them being too close may pose a danger to the Time Lord. (DW: The Parting of the Ways, The Stolen Earth) However at least one regeneration occurred with other individuals seen in close proximity (although this was assisted by the transient Watcher, who may have helped to contain the regenerative energy). (DW: Logopolis)

The damage done to the TARDIS during the Tenth Doctor's regeneration into the Eleventh may be an example of the potential dangers the regeneration energy can pose to those who stand too close.

However it is unclear if the overall damage done was the result of the Doctor regenerating in a position that allowed the energy to flow onto the console of the TARDIS, the regeneration being uncommonly violent, or was simply for dramatic effect.

Physical and mental change

During regeneration, the body of a Time Lord was typically reconfigured into a new form, though this wasn't always the case. (DW: The Doctor's Daughter, The Stolen Earth) The new form is generally, though not invariably, physically younger and healthier (in human terms) than the Time Lord's previous incarnation. The Time Lord might gain or lose height and body mass. After each regeneration there is often a marked change in personality. During the process of regeneration there are the genetic equivalent of 'bit errors' in the DNA of the regenerated cells. This is what causes the appearance of the Time Lord to change; because even the cells of the brain regenerate as well, their brain chemistry and organisation will change. Although the aspects of their personality caused by "nurture" will not change, the "nature" contribution to their personality will change. (BFA: The Sirens of Time) Time Lords of the Oldblood Houses, born with just one heart, grew a second heart upon regeneration. This included the Doctor, who in his first incarnation had only one heart. (MA: The Man in the Velvet Mask)

However it is possible that a retcon has taken place, as when one of the Doctor's hearts is stopped in DW: The Shakespeare Code he wonders aloud how humans can cope with just one.

The Eleventh Doctor feared that he had become a woman, confirming that it is a possibility when it comes to regeneration (or that the mania sometimes experienced during regeneration caused him to jump to this conclusion hastily). (DW: The End of Time) This was justified by the fact that regeneration is very random and, as the Ninth Doctor said in DW:The Parting of the Ways, 'You never know what you're going to end up with'. He also stated prior to that comment that he could even have grown another head due to regeneration, showing an example of one of the possible physical changes. However, up to this point, all the main Time Lord characters' regenerations have remained humanoid.

After-effects

During the first few hours of the regeneration, the Time Lord will often suffer from confusion, erratic behaviour and memory loss. The Doctor, in particular, though not so much other Time Lords, has exhibited mood swings and confusion. It took some time for the regeneration fifth incarnation to remember his own identity. (DW: Castrovalva) On one occasion, he attempted to strangle Peri to death before re-asserting control of himself (DW: The Twin Dilemma) and on another he almost crashed the TARDIS (DW: Children in Need Special) A Zero Room can help with this, as it removed all outside distractions. (DW: Castrovalva)

If they are knocked unconscious, the whole process might be started all over again. (DWN: The Power of the Daleks) After a while, the Time Lord's body will have settled down, though they can regrow limbs within the first 15 hours of the regeneration due to having enough residual energy. (DW: The Christmas Invasion) After his regeneration, the Doctor implied that his TARDIS helped the process along. (DW: The Power of the Daleks) Some Time Lords, however, may regenerate with little or no overt complications, for example, Romana. (DW: Destiny of the Daleks) Even after the physical transformation, changes might occur, as the Doctor believed could happen. (DW: Robot) The Doctor's hair, for instance, went from longer to shorter to longer in the space of a few days. (MA: Cold Fusion)

Limitations

Though Time Lords could regenerate after severe injuries — one Time Lord even beginning to regenerate a complete body after being decapitated (EDA: The Shadows of Avalon), the process only being cut short when a Time Lord is stabbed through both hearts before it can finish — regeneration does not seem to be guaranteed. The Doctor, for example, was at one point convinced that he was going to die at the hands of the Gelth (DW: The Unquiet Dead), although it is possible he meant the particular incarnation, and there have been numerous occasions in his lifetimes where survival, including regeneration, was not assured. Maxil implied that a fatal blast from a staser (an energy weapon used by the Chancellory Guard on Gallifrey) could prevent regeneration. (DW: Arc of Infinity) Stabbing or shooting a Time Lord through both hearts at the same time (EDA: The Shadows of Avalon, PDA: World Game), or drowning, if it happened quickly enough (DW: Turn Left) could also end a Time Lord's life regardless of how many regenerations they have left. Burning out the hearts simultaneously would have the same effect as stabbing or shooting them simultaneously (DW:Silence in the Library/Forest of the Dead). A Time Lord can also willingly reject regeneration, as demonstrated by the Master (DW:Last of the Time Lords).

As well, the interference of some medications, such as anaesthesia, may disrupt or destroy the regenerative process. (DW: Doctor Who)

The Tenth Doctor also states that regeneration is not possible if a Time Lord dies before the process begins, alluding to the alternate time line where he was killed in the flood that destroyed the Racnoss in DW The Runaway Bride. This fact is supported by almost all of the Doctor's regenerations save for the Seventh to the Eighth, during which the Doctor was declared dead in an operating room. It is possible that in this instance the anesthesia slowed the Doctor's metabolism and the ensuing regeneration process to the point where he appeared dead to human medical science. In all other cases the Doctor's regeneration occurred while he was still alive.

The regenerative cycle

The Time Lords had a limited regenerative cycle of twelve regenerations, after which they had no more incarnations and would suffer permanent death. (DW: The Deadly Assassin, Doctor Who) Time Lords can will themselves to die by regenerating when they have no more regenerations left to use, as Azmael chose to do. (DW: The Twin Dilemma) Other life forms (for example, the Minyans) could have hundreds. Rassilon apparently had physical reasons to impose this restriction. (BFA: Zagreus)

As with most such "rules" there were occasionally exceptions to the twelve regeneration limit. The High Council, offered the Master a new regenerative cycle if he complied with rescuing the various incarnation of the Doctor from the Death Zone. (DW: The Five Doctors)

The crew of the Minyans' ship the P7E, however, had had about a thousand regenerations, by which time, however, they wearied of life. (DW: Underworld) Mawdryn and his followers, who had stolen the Time Lords' regeneration technology, also had an apparently limitless number of incarnations, though they had no control over when it would happen and what form, often grotesque, they would change into. Consequently, they also longed for death, making their mutations of a kind of de facto punishment by the Time Lords for stealing their technology. (DW: Mawdryn Undead)

Attitude toward regeneration

As noted above, regeneration is not guaranteed, as the Doctor on numerous occasions believed he was in danger of actually dying. Even with regeneration a possibility, the Doctor has come to consider such a change as being nonetheless a "death". In recollecting the events surrounding the Master's attempt at stealing the Eye of Harmony, the Doctor referred to his incarnations as "lives". (DW: Doctor Who: The Movie) Iris Wildthyme once confided in Samantha Jones, saying that regeneration was treated on Gallifrey the same way sex is on Earth. (EDA: The Scarlet Empress) Though unspecified in the original series, after the 2005 revival of the series the Doctor's attitude towards regeneration has changed - just prior to the end of his ninth incarnation, the Doctor bade farewell to his companion, ('I'm not gonna see you again. Not like this.') even though he was not actually dying. (DW: The Parting of the Ways). Most recently, the Doctor's tenth incarnation was concerned regarding a prediction made regarding his own impending regeneration, saying "Even if I change, it feels like dying. Everything I am dies. Some new man goes sauntering away...and I'm dead." (DW: The Waters of Mars; The End of Time). He seemed incredibly happy when the prophecy seemed to be wrong and he turned out alive after the Time Lords' defeat, until he heard the sound heralding his "death". The Tenth Doctor made the impression that regeneration was simply death for one incarnation of the Doctor while a new man was born with the same memories - his final words confirmed this, in a way, as he said 'I don't wanna go'.

Control over regeneration

Generally, regeneration is initiated when a Time Lord has been too badly injured to survive. However in some cases Time Lords have been known to exercise control over the process. Romana appeared to regenerate on a whim, (DW: Destiny of the Daleks) while Azmael initiated a thirteenth regeneration in order to end his life (DW: The Twin Dilemma). The process can also be stopped with some difficulty (DWN: The Power of the Daleks), as the Master did in order to spite the Doctor (DW: Last of the Time Lords). This is not always an option, however, as the Doctor notes fearfully that while his companion can die only once, he may have to repeatedly regenerate and live out all of his life times when the TARDIS stalls in the middle of space. (DW: Vengeance on Varos)

The degree of control that Time Lords have over their end appearance is unclear. The Master was able to make his next regeneration as young as the Doctor was at the time, though since most regenerations lead to younger bodies this may have been a coincidence. (DW: Utopia) Romana seemed adept enough at the process to custom design her new appearances, trying several bodies before finally deciding on a copy of Princess Astra. The Doctor criticised Romana for taking on the form of another person, suggesting such things were not unheard of. (DW: Destiny of the Daleks) In contrast to Romana, the Doctor did not appear to have much control over his post regeneration appearance; after his fourth regeneration he commented "that's the problem with regeneration, you never quite know what you're going to get" (DW: Castrovalva), and would restate this immediately prior to his ninth regeneration (DW: The Parting of the Ways) (Although the violent nature of his regenerations as opposed to Romana apparently triggering her regeneration on purpose might have something to do with this difference).

While skilled Time Lords can choose their new form with a voluntarily induced regeneration, the process has the potential to go horribly wrong and leave the Time Lord in a severely misshapen body. The problem is then often exacerbated by the Time Lord trying to solve the problem by immediately starting another regeneration instead of obtaining medical assistance, which only amplifies the defects in the regeneration. The end result of several too close regenerations, whether self-initiated or not, is inevitably a mutated monstrosity that can only be put out of its misery by complete disintegration. (DWN: The Twin Dilemma)

Some Time Lords were capable of momentarily regenerating, or partially regenerating. Though this could use up a lot of regenerative energy, it could give the Time Lord a new set of genes, allowing them to fool genetic sensors. The Doctor used this method to on the planet Purgatory in order to fool the genetic scanner used by the Landsknechte. (NA: Original Sin)

The Time Lords were apparently capable of controlling the regeneration of individual Time Lords, either forcing a regeneration, influencing the new appearance (DW: The War Games) or removing later regenerations (DW: The Ultimate Foe).

It appears Time Lords are capable of resisting regeneration, effectively committing suicide. The Master did this after being shot as an alternative to becoming the Doctor's eternal prisoner. (DW: Last of the Time Lords) The Master is later resurrected by a cult of his followers, but despite a debilitated condition and not completly stable body, he doesn't regenerate. It is possible he was unable to due to his life-force problems. (DW: The End of Time) Similarly, the Doctor appears to resist the process in DW: The End of Time. After exposure to a lethal dose of radiation, he notices the process begining, but resists the transformation long enough to visit his former companions throughout time and space. The complexity of the journey would seem to indicate that the Doctor resisted regenerating completely for at least several hours, and it may have resulted in the unusually violent nature of the regeneration.

Time Lords seemingly developed a means for artificial life forms to undergo regeneration as well; the robot dog K-9 Mark I was fitted with a regeneration circuit which allowed him to upgrade to a significantly more advanced model following his self-destruction. (K9TV: Regeneration)

Difficult or unusual regenerations

Regnerative difficulty

While most regenerations seemed to cause moments of mental instability, some offered particularly profound instances of physical peril. The Doctor feared that his fourth regeneration "was failing", and could only be righted with the use of the Zero Room of the TARDIS. (DW: Castrovalva) Later, the Doctor claimed that anesthesia had "nearly destroyed the regenerative process" during his seventh regeneration. (DW: Doctor Who) Still later, one of the the Doctor's hearts stopped beating for a prolonged period of time, and he began to exhale regenerative energy when his ninth regeneration went "a bit wrong". (DW: Children in Need Special, The Christmas Invasion)

For other species, a metamorphic symbiosis regenerator was said to be able to provide help when regerations failed. (DW: Mawdryn Undead)

Meta-Crisis

A Time Lord can prevent death and regeneration by focusing the regenerative energies into a severed appendage, like the Doctor's hand. His hand siphoned off the excess energy that would have changed his appearance while the Doctor used just enough to heal himself from the injury sustained by the Dalek gun. This resulted in the appendage storing enough energy to actually grow a nearly identical Time Lord after it come in contact with Donna Noble. As a consequence, the Doctor appeared to regenerate and heal but did not change. (DW: Journey's End)

It is unknown if this used up one of the Doctor's regenerations.

Cross-species transformations

Though they did not undergo normal regenerations, as noted elsewhere, Mawdryn underwent many mutations of physical form. (DW: Mawdryn Undead) I.M. Foreman, a Gallifreyan (but not a Time Lord) absorbed the DNA around him and underwent indescribable changes as a result of mutations, transcending sex, species and even physical existence itself. (EDA: Interference - Book One, Interference - Book Two) Romana, prior to her regeneration in to her second incarnation, appeared to have taken on a Near-Human blue-skinned form. (DW: Destiny of the Daleks)

One account states that the TARDIS itself, rather than Romana, adopted this shape. (ST: The Lying Old Witch in the Wardrobe)

Aborted Regeneration

Occasionally, a regeneration will fail and the regeneration will abort. Though the Time Lord will have regenerated, they are severely deformed. Though Time Lord technology can treat this, in some occasions the damage will be too severe to fix.

After being shot by the War Lords, the War Chief was barely able to survive. While being taken back to the War Lords' planet, his body attempted to regenerate. Due to the massive injuries and the lack of medical care, this regeneration aborted, which meant he had two conjoined individual bodies, poorly fused together. (NA: Timewyrm: Exodus)

Scientific explanation

The exact mechanism that makes regeneration possible has not been stated. Varying explanations may or may not be compatible with each other.

• One explanation was that Cardinal Rassilon had been investigating a method of regenerating decaying and diseased tissue via a series of permanently carried self-replicating biogenic molecules. The cells of a Gallifreyan body could be repaired, restored and re-organised. This would result in a wholly new physical form. The brain cells would similarly be rearranged, though to a lesser degree, thus ensuring the new incarnation will replicate the memories and personality of the former incarnation. Rassilon intended for this mechanism only to be used upon the Gallifreyan elite. He also inputted a parameter of 12 regenerative cycles to avoid decaying biogenic molecules. (BFA: Zagreus)

• Another theory attributes regeneration to a "nanomolecular virus" that rebuilds the body much like the "self-replicating biogenic molecules". (REF: The Gallifrey Chronicles)

• A third theory is that Time Lords have triple-helix DNA: the third strand was added by Rassilon to make regeneration possible. (MA: The Crystal Bucephalus)

• One partial explanation of the process links it to the release of massive amounts of a hormone known as lindos at moments of extreme trauma, with the hormone triggering the regeneration itself. Recently-regenerated Time Lords can be identified by the raised levels of lindos in their system. (DWN: The Twin Dilemma, BFA: Unregenerate!)

Specific regenerations

Time Lords

The Doctor

• First to second incarnation: Apparently succumbed to old age and/or fatigue. (DW: The Tenth Planet)

• Second to third incarnation: A forced regeneration and exile to Earth by the Time Lords. (DW: The War Games)

• Third to fourth incarnation: Radiation poisoning from the Great One's cave of crystals on Metebelis III. Regeneration did not not occur immediately, as the Doctor said he was "lost in the time vortex" for an indeterminate length of time. (DW: Planet of the Spiders, ST: "Ancient Whispers")

• Fourth to fifth incarnation: Fell from the Pharos Project radio telescope. (DW: Logopolis)

• Fifth to sixth incarnation: Spectrox toxaemia exposure. (DW: The Caves of Androzani)

• Sixth to seventh incarnation: Injured as the Rani attacked the Doctor's TARDIS (DW: Time and the Rani); seemingly because he hit his head (NA: Head Games), however there were underlying issues of radiation poisoning. (PDA: Spiral Scratch)

• Seventh to eighth incarnation: Died on the operating table while undergoing exploratory heart surgery by Dr. Grace Holloway. (DW: Doctor Who) The Doctor claimed that the anesthesia kept him "dead too long", and he did not regenerate immediately upon the death of his predecessor.

• Eighth to ninth incarnation: Unknown; implied to have occurred with relation to the Last Great Time War. (Prior to Rose)

• Ninth to tenth incarnation: Cellular degeneration caused by absorbing the energies of the time vortex from Rose Tyler, which she in turn had absorbed from the heart of the TARDIS. (DW: The Parting of the Ways)

• During tenth incarnation: Partial regeneration after being hit by Dalek fire, (DW: The Stolen Earth); aborted by redirecting the energy to his severed hand; indirectly led to creation of both DoctorDonna and clone. (DW: Journey's End) It is not known at present whether this incident counts against the Doctor's allotment of regenerations.

• Tenth to eleventh incarnation: The Doctor was massively irradiated in the process of saving Wilfred Mott. As with the Third and Seventh Doctors, regeneration did not immediately set in, and the Doctor was able to spend an indeterminate amount of time revisiting past companions before finally succombing. On this occasion, he regenerated so explosively it causes massive damage to the TARDIS and sets it on fire. (DW: The End of Time)
• 

  

  The Tenth Doctor's regeneration

On most of the above occasions, the Doctor has regenerated in the presence of other individuals (usually companions). Known exceptions include his seventh and tenth regenerations which occurred when the Doctor was alone; it is not known for certain whether his second or eighth regenerations occurred in the presence of others.

Of the Doctor's recorded regenerations to date, six have occurred with the Doctor lying in a prone position, while two (as well as the partial regeneration) occurred with him standing upright. At least four of the regenerations (first, third, sixth and eighth) occurred with the Doctor apparently unconscious, while he appeared to remain conscious during his fourth, fifth, ninth and tenth regenerations. His first, fifth, sixth, ninth and tenth regenerations (plus the partial) occurred within the TARDIS; his third, fourth, and seventh occurred outside the ship. (The exact nature of his second and eighth regenerations remains unknown.)

The Doctor's last words

Doctor	Episode	Last words
First	The Tenth Planet	"It's far from being all over."
Second	The War Games	"Is this some sort of joke? No, I refuse to be treated in... What are you doing? No! Stop. You're making me giddy. No, you can't do this to me! No, no, no, no, no, no, no, no, no, no, no, no, no...!"
Third	Planet of the Spiders	"A tear, Sarah Jane? No don't cry, while there's life, there's..."
Fourth	Logopolis	"It's the end. But the moment has been prepared for..."
Fifth	The Caves of Androzani	"Too late, Peri. Going soon. Time to say goodbye. I might regenerate. I don't know. Feels different this time. Adric?"
Sixth	[Ultimate Foe]	Carrot juice, carrot juice, carrot juice.
Seventh	Doctor Who: The Movie	"Puccini... Madame Butterfly. What you're about to do, stop! No! I am not human. I am not like you! I need a beryllium atomic clock! This is 1999, isn't it? No, I'm not human! I'm not human! Timing malfunction! The Master! He's out there. I've got to stop him!"
Eighth		(no regeneration depicted)
Ninth	"The Parting of the Ways"	"Rose... Before I go I just wanna tell you, you were fantastic. Absolutely fantastic. And do you know what? So was I."
Tenth	"The End of Time"	"I don't want to go."

Alternate Doctors

• Ninth to tenth incarnation:Hit by Dalek fire when they tried to exterminate The Master. (DW: The Curse of Fatal Death)

• Tenth to eleventh incarnation:Injured while trying to fix the Dalek's Zectronic beam. (DW: The Curse of Fatal Death)

• Eleventh to twelfth incarnation:Injured while trying to fix the Dalek's Zectronic beam. (DW: The Curse of Fatal Death)

• Twelfth to thirteenth incarnation:Hit by excess zectronic Energy, zectronic Energy was known to able to destroy the Regenerative process of a Time Lord but nevertheless the Regeneration was successful. (DW: The Curse of Fatal Death)

• The Doctor (Unbound 3):Shot by Ruth,she shot him again when he regenerated and so on. Full Fathom Five

The Master

• Used up most of his regenerations escaping from the Darkheart. (MA: The Dark Path)

• Used up his regenerations, up until his last, recovering from bomb blast set by Susan Foreman. (EDA: Legacy of the Daleks)

These accounts contradict each other somewhat. Possibly, not all were used up in the two instances.

• Utilized the power of the Source to steal the body of Tremas. (DW: hThe Keeper of Traken)

It is not known for certain if the incarnation of the Master later "executed" by the Daleks is this same individual.

• Stole the body of the human Bruce after being vaporized by the Daleks. (DW: Doctor Who)

Neither of these new bodies were, strictly speaking, regenerations.

• Regenerated to survive wound from gun fired by Chantho. (DW: Utopia)

The Master had been resurrected to fight the Last Great Time War at this point, and probably had a new regenerative cycle bestowed upon him (per offer made in DW: The Five Doctors).

Romana

• Regenerated into several forms before settling on a body duplicating that of Princess Astra. (DW: Destiny of the Daleks)

One account suggests that she did so to prevent her possession by the evil entity Pandora (BFG: Lies), another that the Key to Time had secretly harmed her (ST: The Lying Old Witch in the Wardrobe). The Doctor, soon after one regeneration, was able to regrow a severed hand (DW: The Christmas Invasion), offering a possible explanation as to how Romana was able to initially choose several different appearances -- including twice choosing that of Astra.

• Regenerated into an incarnation more suited to fighting the War with the Enemy. (EDA: The Shadows of Avalon)

• Romana may have regenerated a third time as a result of the War. (PDA: Tomb of Valdemar)

Rassilon

Rassilon was said to have achieved a cycle of perpetual regeneration, becoming immortal. It was for this secret that Lord President Borusa sent four of the Doctor's incarnations and their companions into the Death Zone, where Rassilon lay in eternal sleep in the Dark Tower. (DW: The Five Doctors).

Rassilon again became president in the Last Great Time War; it would seem that he was awakened from his eternal sleep and regenerated to renew himself for the war. It is possible that Rassilon granted every participating Time Lord a new regenerative cycle to avoid losses in the war and resurrected others, presumably with full regeneration cycles like the Master.

This also gives future producers of the show the ability to go beyond Thirteen Doctors and go on to at least Twenty One (if were counting from the Ninth Doctor onwards).

Borusa

Borusa regenerated at least 3 times, having at least 4 lives. (DW: The Deadly Assassin, DW: The Invasion of Time, DW: Arc of Infinity, DW: The Five Doctors)

Azmael

• Azmael used all his 12 regenerations.(DW: The Twin Dilemma)

• In his Thirteenth and Final body he regenerated past his limit, killing him and Mestor who possessed Azmaels body after his own was destroyed. (DW: The Twin Dilemma)

Jenny

Regenerated several hours after being shot by Cobb, curiously her appearance did not change.

However it is possible that she entered a healing coma, was restored by residual energy from The Source, or was healed by her body's residual cellular energy (although this is reliant on her 'birth' somehow generating extra cellular energy like a regeneration would). (DW: The Doctor's Daughter)

K'anpo Rimpoche

Attacked by Eight Legs and regenerated by merging with his assistant Cho Je. (DW: Planet of the Spiders)

Iris Wildthyme

Regenerated following a lengthy period of illness following the consumption of a live Kaled mutant. (EDA: The Scarlet Empress)

Rallon

Initiated all twelve of his regenerations to stop the Celestial Toymaker. (PDA: Divided Loyalties)

Humans

The Brigadier

Regenerated in 2012, which renewed his youth. (NA: Happy Endings)

Chris Cwej

• Regenerated by force to survive radiation poisoning (BNA: Tears of the Oracle)

Behind the Scenes

• Regeneration was first introduced when the First Doctor (William Hartnell) changed into the Second Doctor (Patrick Troughton) in the closing moments of The Tenth Planet. Tradition has it that Hartnell himself thought up the idea of the Doctor being able to change into a new body as a means of keeping the series going after his departure.

In The Power of the Daleks, the next story, the Doctor said that he had been "renewed", and also said that the change was partly due to the TARDIS, partly to himself, without elaborating. Originally, the Production team meant for the Doctor to have used the TARDIS to reverse time and "rejuvenate" himself, though they may have abandoned this explanation by the time Patrick Troughton took over the role.

The change in the Doctor's appearance was meant to occur several stories earlier, during The Celestial Toymaker, with the Toymaker capriciously having changed the Doctor's appearance out of spite. (The Doctor is invisible and unable to speak for most of the story anyway.) The reason for the change of plan is unknown. Either it was decided to retain Hartnell in the role for a few more stories, or the actor was accidentally issued with a new contract by mistake, making it impossible to recast the Doctor at that moment in time. (A plot device similar to this would occur in The Mind Robber to cover Frazer Hines' temporary replacement by his cousin, Hamish Wilson, after Hines contracted an illness.)

• The changeover was not actually referred to as "regeneration" until the end of Planet of the Spiders, when the Third Doctor (Jon Pertwee) changed into the Fourth (Tom Baker). Prior to this, the Doctor was simply described as having "changed his appearance."

• Fans and the general public have long speculated as to whether the Doctor could change sex as a result of a regeneration. The Time Lord I.M. Foreman having changed sex as a result of regeneration implies that this can happen. Female versions of the Doctor appeared in the non-canonical The Curse of Fatal Death and in the Doctor Who Unbound story Exile. It may have gained further support as the 11th Doctor at first thought he had regenerated into a female.

• In the original 1963-89 series, plus the 1996 TV movie, each regeneration was treated differently on screen, using a variety of special effects ranging from simple cross-fades to a CGI "morph" in the 1996 film. With the return of Doctor Who in 2005, producer Russell T Davies decided regenerations would take a consistent form, with the Time Lord in question standing upright, arms outstretched, and blinding energy flying out from the head, arms, and legs. So far, the four regenerations depicted on screen (three featuring the Doctor in The Parting of the Ways, The End of Time and The Stolen Earth; one featuring the Master in Utopia) have taken on this form. And all four have also occurred within the TARDIS. It remains to be seen if any future on-screen regenerations will retain the same format.

• After his resurrection on Earth the Master didn't regenerate. It is unclear if he was merely unwilling to do so until his body totally failed or if he could not because his resurrection was sabotaged.

(Redirected to Category:Regeneration article)

From DC Database

Regeneration is the body's ability to automatically repair injuries at a rate of speed that surpasses that of a normal human. As this is a power and not a skill, medical knowledge is not required for this to take effect. Super-speedsters develop this power as a function of super-speed and their connection to the Speed Force. In some cases, an individual may even possess the ability to regenerate missing limbs. This power is exclusive to an individual's own body and cannot be used on others (see also, Healing).

From Dofus

Spell Information

Cast by

• Treechnid
• Strawberry Jelly
• Moowolf
• Chouque
• Lemon Jelly
• Ancestral Treechnid

Spell Properties

Linear	Line of Sight	Free Squares	Boost Range	Fatal

Spell Characteristics

Caution: Monsters' elemental/neutral damage is modified by their statistics, which are in majority unknown.

Lvl	Effect	Crit	AP	Ra	Critical		Casts per		Cd	Caster level
					Hit	Fail	Tgt	Trn
1	Heals 51~150 HP	Heals 150 HP	5	0~0	1/50	1/50	-	-	15	0
2	Heals 71~170 HP	Heals 170 HP	5	0~0	1/50	1/50	-	-	15	0
3	Heals 91~190 HP	Heals 190 HP	5	0~0	1/50	1/50	-	-	15	0
4	Heals 121~220 HP	Heals 220 HP	5	0~0	1/50	1/50	-	-	15	0
5	Heals 151~250 HP	Heals 250 HP	5	0~0	1/50	1/50	-	-	15	0

From EQ2i, the EverQuest II wiki

Regeneration is a magical effect, found on variety of equipment, that increases In-Combat Health Regeneration Per-Tick of the caster by x, where x is the amount of extra hit points regained each tick.

For example, Regeneration I increases Health Regeneration by 1.0 every 6 seconds (1 tick), while Regeneration IV increases regeneration by 4.0.

This was one of the effects converted to a Blue Stat (we express it as hregen) see Category: In-Combat_Health_Regeneration_(Equipment) for items with this effect.

Note: not all items with this type of effect were converted to blue stats, the few things that had a regen effect part of a bigger effect were not converted.

see Category: Regeneration for items with this effect.

From GuildWiki

There are two types of regeneration in the game, choose which one you want to read about:

• Health Regeneration
• Energy Regeneration

The Star Trek Expanded Universe Database is for fanon and related content. See Memory-Alpha.org for the canon Star Trek wiki.

1. REDIRECTmemoryalpha:Regeneration

From SWG Wiki

Before the NGE, Regeneration was an ability available to Trandoshans, partially in exchange for their lack of boots and gloves. It was a short term buff (5 minutes) which Pre-CU increased Consitution and Strength, and in the CU it increased Health and Action Regen by 10%. It was removed from the game along with the other unique species only specials in the early days of the NGE

From TibiaWiki

Overview

All players automatically regenerate Mana and Hitpoints over time as long has they have eaten some kind of Food recently.

All food regenerates mana and hitpoints for some length of time depending on the food. The longest you can regenerate for without consuming more Food is 1200 seconds (20 minutes). See the Food page for more information on the different kinds of edible items.

Regeneration Rates

All vocations regenerate mana and hitpoints at different rates. Knights regenerate Hitpoints the fastest, while Druids and Sorcerers regenerate Mana the fastest. The kind of food eaten does not affect the regeneration rate.

If a player has purchased a promotion, then they will regenerate Mana and/or Hitpoints faster.

For more information on regeneration rates, see pages specific to each vocation:

• Rookie (no vocation)
• Knight
• Paladin
• Druid
• Sorcerer

Mana Regeneration None (Rookie)  Knight  Paladin  Mage  Elite Knight  Royal Paladin  Promoted Mage

Hit Points Regeneration None (Rookie)  Knight  Paladin  Mage  Elite Knight  Royal Paladin  Promoted Mage

Special Items

Eating food is not the only way to regenerate Hitpoints and Mana. There are some special items that can be used.

These items will quickly replenish or regenerate Mana:

• Mana Fluid: Will immediately replenish a large amount of mana (100 average)
• Mana Potion, Strong Mana Potion, Great Mana Potion, Great Spirit Potion: Will immediately replenish a large amount of mana (100, 200 and 300 average)

The smaller the potion is more profitable mp/gp it becomes.

• Soft Boots: These will continuously recover your mana (and hitpoints) over time for 240 minutes then they will need to be repaired.
• Life Ring: Will regenerate mana and hitpoints much faster while it is worn.
• Ring of Healing: Will regenerate mana and hitpoint much faster than a Life Ring while it is worn.

Soft boots are more profitable mp/gp than a life ring, and a life ring is more profitable mp/gp than a ring of healing.

• Also some rare food can fill all your mp.

These items will quickly replenish or regenerate Hitpoints:

• Life Fluid: Will immediately replenish a small amount of hitpoints
• Small Health Potion, Health Potion, Strong Health Potion, Great Health Potion, Ultimate Health Potion, Great Spirit Potion: Will immediately replenish a large amount of hitpoints (75, 150, 300 and 500 average)

The smaller the potion is more profitable hp/gp it becomes.

• Life Ring: Will regenerate mana and hitpoints much faster while it is used.
• Ring of Healing: Will regenerate mana and hitpoint much faster than a Life Ring while it is used.
• Soft Boots: These will continuously recover your health (and mana) over time for 240 minutes then they will need to be repaired.

Soft boots are more profitable hp/gp than a life ring, and a life ring is more profitable hp/gp than a ring of healing.

• Healing Runes (Intense Healing Rune, Ultimate Healing Rune) will immediately replenish hitpoints based on the user's experience level and magic level.

Intense Healing Rune is more profitable than Ultimate Healing Rune.

• Healing Spells (Light Healing, Intense Healing, Ultimate Healing, Divine Healing, Heal Friend, Mass Healing, Wound Cleansing) will immediately replenish hitpoints based on the caster's experience level and magic level.

The less mana a spell use its more profitable hp/mp.

• Also some rare foods can fill all your hp.

From Teletraan I: The Transformers Wiki

Transformers: Armada > Episode 34
Previous episode		Next episode

• Original air date: Saturday April 19, 2003
• Major characters (in order of appearance): Smokescreen, Red Alert, Optimus Prime, Hot Shot, Jetfire, Scavenger, Side Swipe, Blurr, Rad, Carlos, Alexis, Billy, Fred, Megatron, Thrust, Cyclonus, Demolishor, Wheeljack, Starscream, Air Defense Mini-Con Team, Tidal Wave, Jolt, High Wire

Contents 1 Synopsis 2 Quotes 3 Notes 3.1 Animation and/or technical glitches 3.2 Continuity errors 3.3 Real-world references 3.4 Miscellaneous trivia

Synopsis

While Red Alert carefully disassembles Smokescreen in hopes of saving his comrade, Optimus and the other Autobots explain to the kids the mechanics of Transformers' sparks. Red Alert reports that Smokescreen has a very strong chance of survival and then his own face distorts nonsensically. Hot Shot swears revenge against the Decepticons for the damage they did Smokescreen.

In the Decepticons' base, Megatron enjoys having the power of the Requiem Blaster under his control. A grumpy Starscream then enters, resentful of his abandonment in the jungle. Thrust feigns concern, and Starscream punches Thrust into a wall. While Cyclonus and Demolishor are glad to see Thrust get what's coming to him, Megatron dismisses all his forces.

Starscream and the Air Defense Team enjoy a repairing energy bath (hot!). Demolishor comes to retrieve the Mini-Cons. Starscream and Demolishor almost get into a confrontation, but Demolishor relinquishes his duty to Starscream.

In private, Thrust and Megatron plot to get Starscream destroyed - although Megatron is too busy enjoying Thrust's compliments to figure out how clearly he's being manipulated. Starscream overhears the conspiracy and combines the Star Saber to take Thrust and Megatron down. The other Decepticons rush in to stop Starscream, so Starscream rushes to the teleport chamber. On his way out, Starscream proves that he can use the Star Saber to block the Requiem Blaster. Starscream flies to Earth.

The Autobot sensors detect Starscream's presence in Earth's atmosphere. Hot Shot and Side Swipe rush out to fight Starscream. Tidal Wave, in pursuit of Starscream, switches his target to Hot Shot. Prime and Jetfire arrive to fight off Tidal Wave in their combined form, but they're unable to do any damage; luckily for them the simple minded giant is focused on attacking Starscream. Starscream then tosses the Star Saber to Jet Optimus, who uses it to slice off one of Tidal Wave's gun emplacements, and Tidal Wave retreats.

Inside, Starscream explains his story to the Autobots. Hot Shot enthusiastically argues that it's wrong for them to offer refuge to Starscream - especially after Smokescreen was so severely injured. Hot Shot mentions that the Autobots have already been betrayed once by Sideways, so Scavenger points out that he too technically falls into the "betrayer" category. With votes of confidence from the kids and Mini-Cons, Optimus declares that Starscream will be allowed to stay.

Outside, Hot Shot and Starscream formally have a showdown. Inside, the other Autobots debate who should be the one to tell the two mechs to stop their pointless grudge match, when Red Alert comes in to report that the operation was successful but a new body was needed.

Hot Shot and Starscream continue to pound into each other. A new challenger interrupts the two by throwing some boulders. The new Transformer quickly takes down both Starscream and Hot Shot. When the new Autobot speaks, Hot Shot figures it out: it's Smokescreen in a new body. Smokescreen explains to both of the younger soldiers that being on the Autobots means just getting along.

With data from Starscream, the Autobots are ready to lead an attack on the Decepticons. They gather in the warp gate. Next stop: the Moon.

Quotes

Hot Shot: Yea, great, let's go kick some Decepti-butts.

Carlos: Yeah, go get 'em!
Billy: Yeah, it's payback time for Smokescreen!
Fred: AND FREEDOM!

Notes

Animation and/or technical glitches

• After being shot down by Tidal Wave, Starscream is missing his left wing. Seconds later, it's attached again.
• Prime says, "The Star Saber," in Tidal Wave's voice. It could be possible Tidal Wave happened to say, "The Star Saber," at the same time Prime was looking at it and moving his head, but it's not especially likely.

Continuity errors

• When Demolishor and Wheeljack rush in, Starscream's null-beam cannons activate. However, Swindle is never seen powerlinking to Starscream for this (which he generally is) nor is Swingle ever seen again in the episode.

Real-world references

• None known.

Miscellaneous trivia

• So, Starscream's story arc is forced forward by Megatron betraying Starscream? That's like . . . bizarro-G1.

From Yu-Gi-Oh Card Maker Wiki

Regeneration Seal

So, I've been working on this idea for quite a long time now and I finally think I have it down. Please don't edit this page unless you get my permission. I really want this idea to stay mine and not be influenced overtly.

A monster who possess a Regeneration Seal is sort of like a Crystal Beast monster. In the way that when it's slain, it's converted into an effectless Continuous Spell. Now, monsters with the Regeneration Seal can also be sent to the Spell/Trap Zone as a Continuous Spell if they are targeted by a card effect or slain in battle.

Now, in varying numbers of combinations, these monsters can be removed from play in order to create Regenerates. Regenerates are resembled to Fusion and Synchro, however, besides being Regenerate, they are only Effect Monsters. Regardless of that, they have certain summoning conditions. They are however, a part of your Extra deck insead of your Main Deck. Yay! However, monsters with the Regeneration Seal are almost always Semi-Limited or Limited.

All Regenerate Monsters will have their effect explained on the card. (at least where they go after they are destroyed by those two particular things I listed). If you want to make a Regenerate monster, make it and read over the rules. Thanks!!!

From City of Heroes Wiki

This article is about the Regeneration Powerset. For information regarding the health regeneration gameplay mechanic, see Health Regeneration.

Overview

Contents 1 Overview 2 Power Tables 2.1 Scrapper 2.2 Stalker 3 Powers 3.1 Dull Pain 3.2 Fast Healing 3.3 Hide 3.4 Instant Healing 3.5 Integration 3.6 Moment of Glory 3.7 Quick Recovery 3.8 Reconstruction 3.9 Resilience 3.10 Revive 4 Powers History 5 External Links

Regeneration is a Scrapper and Stalker secondary power set.

Regeneration lets you regenerate more quickly from damage and effects. Regeneration offers almost no actual damage resistance, but your Hit Point and Endurance Regeneration can become so incredibly fast, that your wounds heal almost instantly. Those who possess this power set have little downtime, but risk the effects of spike damage.

Power Tables

Scrapper

The Regeneration powerset is available as a secondary set for Scrappers. The following table shows which powers are available and at what level:

	Power	Level	Effect
	Fast Healing	1	Auto: Self +Regeneration
	Reconstruction	2	Self Heal, +Resistance(Toxic)
	Quick Recovery	4	Auto: Self +Recovery
	Dull Pain	10	Self: +Max Health
	Integration	16	Toggle: Self +Resistance(Knockback, Disorient, Hold, Sleep, Immobilize), +Regeneration
	Resilience	20	Auto: Self +Resistance(Disorient, Smash, Lethal, Toxic)
	Instant Healing	28	Click: Self +Regeneration
	Revive	35	Self Rez
	Moment of Glory	38	Self +Resistance(All Damage but Psionics), +Defense(All Damage but Psionics), +Recovery

Stalker

The Regeneration powerset is available as a secondary set for Stalkers. The following table shows which powers are available and at what level:

	Power	Level	Effect
	Hide	1	Toggle: Self Stealth, +Defense(Melee, Ranged, Area of Effect)
	Fast Healing	2	Auto: Self +Regeneration
	Reconstruction	4	Self Heal, +Resistance(Toxic)
	Dull Pain	10	Self: +Max Health
	Integration	16	Toggle: Self +Resistance(Knockback, Disorient, Hold, Sleep, Immobilize), +Regeneration
	Resilience	20	Auto: Self +Resistance(Disorient, Smash, Lethal, Toxic)
	Instant Healing	28	Click: Self +Regeneration
	Revive	35	Self Rez
	Moment of Glory	38	Self +Resistance(All Damage but Psionics), +Defense(All Damage but Psionics), +Recovery

Powers

The following are powers in the Regeneration powerset.

Dull Pain

Using ancient techniques, you can make yourself more resilient to pain. Thus, you can take more damage before being defeated. When you activate this power you will increase your maximum Hit Points for a couple of minutes.

Recharge	Very Long
Minimum Level	10 (Scrapper)
	10 (Stalker)
Effects	Self: +Max Health
Enhancements	Reduce Endurance Cost
	Increase Attack Rate
	Enhance Heal
Set Categories	Healing

Fast Healing

You heal Hit Points at a faster rate than normal. This power is always on.

Minimum Level	1 (Scrapper)
	2 (Stalker)
Effects	Auto: Self +Regeneration
Enhancements	Enhance Heal
Set Categories	Healing

Hide

Hide makes you almost impossible to detect. When properly 'Hidden", a Stalker can pull off Critical hits with his attacks, and even land a massive 'Assassins Strike' with an Assassins power. When you attack or are damaged while using this power, you will be discovered. Even if discovered, you are hard to see and retain some bonus to Defense. Unlike most stealth powers, Hide can be used at the same time as other Concealment powers, giving you even greater stealth capability. Very low Endurance cost.

Recharge	-
Minimum Level	1 (Stalker)
Effects	Toggle: Self Stealth
	+Defense(Melee, Ranged, Area of Effect)
Enhancements	Reduce Endurance Cost
	Increase Attack Rate
	Enhance Defense Buff
Set Categories	Defense

Instant Healing

When you activate this power, you can regenerate your health at an astounding rate. This boost to you regeneration rate last about a minute and takes a long time to recharge once used.

Recharge	Long
Minimum Level	28 (Scrapper)
	28 (Stalker)
Effects	Click: Self +Regeneration
Enhancements	Reduce Endurance Cost
	Increase Attack Rate
	Enhance Heal
Set Categories	Healing

Integration

You can Integrate your mind and body, making you resistant to Knockback, Disorient, Hold, Sleep, and Immobilization effects, as well as increase your regeneration rate, for as long as you can keep this toggle power active.

Recharge	Fast
Minimum Level	16 (Scrapper)
	16 (Stalker)
Effects	Toggle: Self +Resistance(Knockback, Disorient)
	Self +Resistance(Hold, Sleep, Immobilize)
	Self +Regeneration
Enhancements	Reduce Endurance Cost
	Increase Attack Rate
	Enhance Heal
Set Categories	Healing

Moment of Glory

When you activate this power, you gain Resistance and Defense to all damage types except Psionics, recover Endurance more quickly, and are highly resistant to Sleep, Disorient, Immobilization, and Hold effects.

Recharge	Very Long
Minimum Level	38 (Scrapper)
	38 (Stalker)
Effects	Self +Resistance(All Damage but Psionics)
	+Defense(All Damage but Psionics)
	+Recovery
Enhancements	Reduce Endurance Cost
	Increase Attack Rate
	Enhance Endurance Modification
	Enhance Damage Resistance
	Enhance Defense Buff
Set Categories	Resist Damage
	Defense
	Endurance Modification

Quick Recovery

You recover Endurance at a faster rate than normal. This power is always on.

Minimum Level	4 (Scrapper)
Effects	Auto: Self +Recovery
Enhancements	Enhance Endurance Modification
Set Categories	Endurance Modification

Reconstruction

Through perfect control of your body, you can concentrate for a few moments and heal yourself. The effects of Reconstruction also leaves you resistant to toxic damage for a while.

Recharge	Long
Minimum Level	2 (Scrapper)
	4 (Stalker)
Effects	Self Heal, +Resistance(Toxic)
Enhancements	Reduce Endurance Cost
	Increase Attack Rate
	Enhance Heal
	Enhance Damage Resistance
Set Categories	Resist Damage
	Healing

Resilience

You are more Resilient. This power allows you to build up a resistance to disorientation effects. You tend not to get disoriented, and if you do, it wears off quickly. This resistance to disorientation gets stronger as you go up in level. Resilience also grants some resistance to smashing, lethal and toxic damage. This power is always on.

Minimum Level	20 (Scrapper)
	20 (Stalker)
Effects	Auto: Self +Resistance(Disorient, Smash, Lethal, Toxic)
Enhancements	Enhance Damage Resistance
Set Categories	Resist Damage

Revive

Should you fall in battle, you can Revive yourself from the brink of death. You will revive with most of your hit points and half your endurance and be protected from experience debt for 20 seconds.

Recharge	Very Long
Minimum Level	35 (Scrapper)
	35 (Stalker)
Effects	Self Rez
Enhancements	Increase Attack Rate
	Enhance Endurance Modification
	Enhance Heal
Set Categories	Healing

Powers History

This section contains information about changes that took place in City of Heroes. It is provided for historical purposes.

• Instant Healing was originally a Toggle power, but was changed to a Click power with the release of Issue 5.

• Regeneration has been a long standing joke in the discussion of power "nerfs". This is mainly due to the fact that in early issues of the game regeneration was constantly changed.

• Moment of Glory was originally a power which prevented all regeneration, took away almost all Hit Points, and lasted for 195 seconds. After that, the buff of the power faded, leaving you with little health and no regeneration for a short while. The new version, introduced shortly after Issue 11, lasts 20 seconds and has no Hit Point penalty or crash.

External Links

• Regeneration for Scrappers at RedTomax.com
• Regeneration for Stalkers at RedTomax.com