Dalek (The Chase)

A Dalek was present on Aridius while chasing the First Doctor, Vicki Pallister, Ian Chesterton, and Barbara Wright.

History
This Dalek was tricked by the Doctor into falling into a tunnel, allowing the TARDIS crew to escape Aridius. (TV: The Chase) A Dalek, likely the same one, was found in the intensive care unit on the Dalek Asylum planet. (TV: Asylum of the Daleks)