Finney

"Finney" was the alias used by a burglar who tried to steal the Doctor's TARDIS and use it to break into banks.

Biography
"Finney" imersonated one of the scientists that had been invited by the Third Doctor to case his cottage. After the other scientists left, he went into the cellar, but was confronted by the Time Lord. When Finney tried to distract him with a smoke bomb, a fire started, forcing them to take refuge in the TARDIS. Upon dematerialising, the time/space craft was transported to Skaro by a time vector controlled by the Daleks, who planned to turn the Doctor into a humanoid Dalek. After they escaped from the Dalek city, Finney aided the Doctor in using a herd of dinosaur-like creatures to destroy the Daleks. He was then returned to Earth in the TARDIS. (COMIC: The Planet of the Daleks)