Red Dalek (Susan and the Daleks)
From Tardis Wiki, the free Doctor Who reference
One Red Dalek was present in the occupied London during the 2150s Dalek invasion of Earth.
Patrolling Trafalgar Square with a Silver Dalek drone, the Red Dalek noticed an unauthorised humanoid on a bench — Susan Foreman, who had unwittingly gone back to the middle of the invasion in the Doctor's TARDIS. She fled up a flight of stairs and took refuge in said TARDIS; the Red Dalek attempted to follow her up by hoverbout, but was too late to stop her escaping. However, it ordered that the Blue Chrono-Dalek give chase to the intruder. (TV: Susan and the Daleks)
