A Dalek drone captured by the Space Security Service during the 41st century in a war against humanity and the New Dalek Paradigm and placed on Station 7. It was later one of ten captive Daleks, itself designated Dalek 1, apparently reconditioned to defend the station against a Dalek force that invaded the station in search of "the Abomination" where it was rendered inactive.
The conditioning process didn't work; all of the Daleks including Dalek 1 easily bypassed it and tricked the Space Security Agents into a false sense of security before it joined its fellow Daleks in exterminating the SSS agents.
Dalek 1 was destroyed in the battle. (COMIC: The Only Good Dalek)