User:Salyavin
My first Doctor was number 4. I've had a love of Who errata since I picked up a copy of The Doctor Who Technical Manual as a kid.
Salyavin was a renegade Time Lord invented by Douglas Adams. He first appeared, or rather didn't appear, in the unaired Doctor Who serial Shada. He also appeared in Douglas Adam's novel Dirk Gentley's Holistic Detective Agency which was itself a reworking of the serial City of Death.
Salyavin's working alias was Professor Urban Chrontis. He held the esteemed, yet abstruse title of Regius Professor Chronotis and the equally obscure position of Chair of Chronology at St. Cedds College, Cambridge. He was awarded this cinecure by King George the Third after answering three fundamental questions about the nature of time.
The answers were "Yes, no, and maybe."