Fitz Kreiner
| Doctor Who character | |
| First appearance | The Taint |
|---|---|
| Last appearance | The Gallifrey Chronicles |
| Portrayed by | Matt Di Angelo |
| Information | |
| Affiliated | Eighth Doctor |
| Species | Human |
| Home planet | Earth |
| Home era | 1963 |
Fitzgerald Michael Kreiner, or simply Fitz, is a fictional character in the Eighth Doctor Adventures novels based upon the British science fiction television series, Doctor Who. The Eighth Doctor first met him in the novel The Taint by Michael Collier and he went on to become one of his companions.
Fitz was born in 1936 to Otto Kreiner and Muriel Tarr Kreiner at the Royal Free Hospital in Hampstead. His father died when Fitz was young, and his mother fell ill, forcing Fitz into foster care. During World War II, he was often subjected to beatings by other boys, due to his German heritage.
Fitz was 27 years old when he first met the Eighth Doctor and Sam Jones in 1963. He smoked, drank and liked to think of himself a ladies' man (which he is not). He often found himself out of his depth in futuristic and alien settings, but was always loyal to the Doctor and was the longest serving companion in the novels (55 novels to date).
In The Taint, Fitz was working at a florists' when he became entangled with an alien plot. He discovered that his mother, a patient in a mental institution, and all the other patients had alien leeches in their heads. Mrs. Kreiner was killed when the Doctor reprogrammed a humanoid robot to kill all those infected by the leeches, lest they destroy humanity. After these events, Fitz decided to travel with the Doctor and Sam, technically on the run from the police.
After an adventure on the Vega space station some time in the future, the TARDIS crew returned to 1967 to investigate the activities of the "Revolution Man". During this time, Fitz left the TARDIS for two years, and became a brainwashed agent of Communist China, only returning when the Doctor broke his conditioning.
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