|Also known as:||Professor Chronotis|
|Home Planet:||Gallifrey (later Earth)|
|Home Era:||Rassilon Era|
Salyavin had great mental powers, and was able to "move his mind into another's", but was also able to make the Time Lords forget about Shada, partly by stealing a book called The Worshipful and Ancient Law of Gallifrey. Growing up, despite (or because of) Salvayin's criminal reputation, the Doctor admired Salyavin greatly.
Salyavin secretly hid for centuries as a Human at St. Cedd's College in Cambridge and lived in his TARDIS, which was an earlier model than the the Doctor's TARDIS, which was a Type 40). The Doctor knew him and considered him a friend, though he did not know of the connection between Salyavin and Chronotis. (DW: Shada) The Doctor visited him several times over the decades, from his first incarnation onwards. (DWA: Cambridge Previsited)
When Salyavin began approaching his thirteenth incarnation, and thus the end of his cycle of regenerations, he sent a message to the Doctor to come and see him, so he could return The Worshipful and Ancient Law of Gallifrey, which he had stolen. However, it was not until the Doctor's eighth incarnation that he was able to follow up his request. (DW: Shada, WC: Shada)
He died when Skagra's sphere attacked him searching for information concerning The Worshipful and Ancient Law of Gallifrey, however due to a serendipitous mistake by Clare Keightley with Salyavin's TARDIS he was brought back into existence.