Eidolons are the summons in Final Fantasy XIII, a spirit belonging to only a single l'Cie whom they reflect in some matter. Starting off uncontrollable, an Eidolon must be tamed in a battle by its l'Cie before becoming an ally to him or her. However, the battle will be not an easy one. The Eidolons will immediately cast Doom on their respective summoner at the start of the battle, so they must defeat them before the spell counter reaches 0, or they will lose the battle automatically. They are summoned through SP (Summon Points) and fight alongside the summoning party member in battle while the other members temporarily leave. Additionally, one can activate Gestalt Mode (ドライビングモード Doraibingu Mōdo, lit. Driving Mode), a special ability that allows the Eidolons to change into a rideable form. When used by the player, it shifts the battle to a more action-oriented tone in which button inputs correspond to attacks.
The duration of the Gestalt Mode is determined by a gauge, and each attack subtracts a certain number of points from the gauge. It also allows access to the Eidolon's finisher, which immediately consumes all the points left in the gauge. Eidolons grow in strength as their summoner grows, and the power of their finishing move increases as the player summons them more often in battle. Eidolons also have a connection with the Paradigm Shift roles their summoner can use when they join the party. Each Eidolon has a concept that defines their actions in battle.
Snow's Eidolon, the Shiva sisters, can become a motorcycle. Their concept is Rapid Blaster.
Lightning's Eidolon, Odin, can become a horse. His concept is Multi-Attacker.
Sazh's Eidolon, Brynhildr, can become a sports car with side mounted machine guns. Its concept is Gadget Master.
Fang's Eidolon, Bahamut, can become a flying dragon. His concept is Aerial Raver.
Hope's Eidolon, Alexander, can become an immobile fortress hugging one edge of the battlefield. His concept is Tactical Commander.
Vanille's Eidolon, Hecatoncheir, can become a quadrupedal mech with four machine gun turrets. Its concept is Shooting Blaster.
"Die Gestalt" is a German word for "form" or "shape". It is used in English to refer to a concept of "wholeness" in which the whole is greater than the sum of its parts.
|Alexander - Asura - Atomos - Bahamut - Bomb - Cactuar - Cait Sith - Carbuncle - Catoblepas - Chocobo - Diablos - Fenrir - Gilgamesh - Goblin - Golem - Ifrit - Ixion - Kirin - Lamia - Leviathan - Lich - Maduin - Magic Pot - Magus Sisters - Midgardsormr - Moogle - Odin - Phoenix - Quetzalcoatl - Ragnarok - Raiden - Ramuh - Remora - Shiva - Siren - Sylph - Tiamat - Titan - Tonberry - Typhon - Unicorn|
|Final Fantasy IV|
|Cockatrice - Mindflayer - Mist Dragon - Whyt|
|Final Fantasy V|
|Final Fantasy VI|
|Bismarck - Crusader - Quetzalli - Phantom - Seraph - Lakshmi - Valigarmanda - Zona Seeker|
|Final Fantasy VII|
|Bahamut Fury - Bahamut SIN - Bahamut ZERO - Choco/Mog - Hades - Kjata - Knights of the Round - Neo Bahamut|
|Final Fantasy VIII|
|Brothers - Cerberus - Doomtrain - Eden - MiniMog - Pandemona|
|Final Fantasy IX|
|Final Fantasy X|
|Anima - Valefor - Yojimbo|
|Final Fantasy XI|
|Garuda - Spirit Pacts|
|Final Fantasy XIII|
|Brynhildr - Hecatoncheir|
|Summons of Ivalice|
|Adrammelech - Alraune - Aquarius - Balasa - Belias - Chaos - Cúchulainn - Cu Sith - Cyclops - Djinn - Exodus - Faerie - Famfrit - Garchimacera - Gnoam - Hashmal - Mateus - Ramih - Sagittarius - Sahagin - Salamander - Shemhazai - Shivan - Shivar - Ultima - White Hare - Wyvern - Zalera - Zeromus - Zodiark|
|Dissidia Final Fantasy|
|Barbariccia - Behemoth - Cagnazzo - Deathgaze - Demon Wall - Iron Giant - Kraken - Malboro - Mandragora - Marilith - Omega - PuPu - Rubicante - Scarmiglione - Shinryu - Ultima Weapon - Ultros|
|Big Bang - Chef's Knife - Delta Attack - Diamond Dust - Hellfire - Judgment - Judgment Bolt - Mega Flare - Mind Blast - Ruby Light - Thunderstorm - Tri-Disaster - Tsunami - Zantetsuken|
|Lightning - Snow Villiers - Oerba Dia Vanille - Sazh Katzroy - Hope Estheim - Oerba Yun Fang|
|Gadot - Lebreau|
|Amodar - Bartoromy Estheim - Cid Raines - Galenth Dysley - Jihl Nabaat - Rygdea - Yaag Rosch|
|Other non-playable characters|
|Anima - Dajh Katzroy - Etro - Kjata - Linze - Maqui - Moktar - Nora Estheim - Orphan - Serah Farron - Yuge|
|Eden - Hanged Edge - Lowerworld Vertigo - Fifth Ark - Gapra Whitewood - Lake Bilge - Nautilus - Orphan's Cradle - Palumpolum - Palamecia - Sunleth Waterscape - The Vile Peaks - Bowdam|
|Archylte Steppe - Mah'habara - Mount Yaschas - Oerba Village - Tejin Tower - Terra Incognita|
|Cie'th - Crystals - Crystarium System - Eidolon - fal'Cie - Focus - l'Cie - Operation Nora - PSICOM - Purge - The Sanctum - Team Nora|
|Final Fantasy XIII Episode Zero: Promise|
|Characters - Enemies - Locations - Translations - Wallpapers|