What science fiction character featured in "Doctor Who" is featured in an original novel written by Christopher Bulis?
The Sorcerer's Apprentice (Doctor Who novel): The Sorcerer's Apprentice is an original novel written by Christopher Bulis and based on the long-running British science fiction television series "Doctor Who". The Sorcerer's Apprentice (Doctor Who novel):  It features the First Doctor, Susan, Ian and Barbara. First Doctor: The First Doctor is the initial incarnation of the Doctor, the protagonist of the BBC science fiction television series "Doctor Who".
First Doctor