Old man (Beige Planet Mars)

An old man and his companion were offworlders involved in repelling the Dalek invasion of Mars. They downed a flying saucer at Argyre Dam and helped with coordinating the final attack. He had thin white hair and an aquiline face, and he wore a blue business suit that Bernice Summerfield considered "stylish". (PROSE: Beige Planet Mars)

Behind the scenes

 * The old man is the 42nd incarnation of the Doctor co-created by Lance Parkin and Mark Clapham for the Odyssey series of fan novellas. He had previously been planned to appear in the epilogue of The Dying Days alongside his wife Iphegenia, who apparently accompanies him in Beige Planet Mars.
 * The 42nd Doctor was based on.