| Susan Foreman | An unearthly child, The Daleks, The edge of destruction, Marco Polo, The keys to Marinus, The Aztecs, The Sensorites, The reign of terror, Planet of giants, The Dalek invasion of Earth, The five Doctors |
| The Monk | The time meddler, The Daleks' masterplan |
| The War Chief | The war games |
| The Master | Terror of the Autons, The mind of evil, The claws of Axos, Colony in space, The Dæmons |
| Cho-je / K'anpo | Planet of the spiders |
| Morbius | The brain of Morbius |
| Romanadvoratrelunda (Romana) | The Ribos operation, The pirate planet, The stones of blood, The androids of Tara, The power of Kroll, The armageddon factor, Destiny of the Daleks, City of death, The creature from the pit, Nightmare of Eden, The horns of Nimon, Shada, The leisure hive, Meglos, Full circle, State of decay, Warriors' gate, Dimensions in time |
| Drax | The armageddon factor |
| Professor Chronotis / Salyavin | Shada |
| The Rani | The mark of the Rani, Time and the Rani, Dimensions in time |