Doctor Who and the Infinity Doctors was a book that was cited when the Eighth Doctor mentioned that he was unsure if he had been exiled to his homeplanet, among other possibilities. (PROSE: Bafflement and Devotion)
The Confounding Case of the Planetary Prankster • The Pernicious Plots of the Big Game Hunter • The Dangerous Dilemma of the Dream Doorway • Assassin on the Railroads • The Curious Case of the Weirdling Woods
Some categorisation may be based upon conjecture. Real world information should not enter into this. Additionally, a character's role in the DWU can differ from the real world - their placement here is for categorisation.