| Hint | Answer |
| Portrayed by... | |
| First post-regeneration appearance... | |
| Last appearance (regular)... | |
| Last appearance (guest)... | |
| Year of first appearance... | |
| First used this device in Fury from the Deep | |
| Favourite musical instrument... | |
| 'I should like a ___ ____ ____' | |
| First doctor to be seen visiting this, his home planet... | |
| Companion... | |
| Played by... | |
| Companion... | |
| Played by... | |
| Companion... | |
| | Hint | Answer |
| Played by... | |
| Companion... | |
| Played by... | |
| Companion... | |
| Played by... | |
| Encountered this lost civilisation in The Underwater Menace | |
| Runs into these giant crabs in a dystopian human colony | |
| Was attacked by these small rodent-sized robots in Tomb of the Cybermen | |
| Had a 'misunderstanding' with these Martians | |
| Found this lizard-monickered doppelgänger in future Australia | |
| Encouters Yetis as well as this future recurring character in the London Underground | |
| Went up against this renegade member of his own race in his last episode | |
| Forced to regenerate due to... | |
|