Edwin Bracewell
Edwin Bracewell was an android made by the Daleks after they landed in 1941. He was placed in a War Room alongside Winston Churchill. He was unaware of his origins, and was implanted with memories of a human life and the creation of the Daleks as a weapon called an 'Ironside' for Britain.
When Churchill summoned the Doctor and Amy Pond to his base, the Doctor caused the Daleks to reveal their true nature. The Daleks revealed Bracewell as their own creation, blasting his hand off.
After the Doctor foiled the Daleks' original plan, they revealed that Bracewell's android body contained an Oblivion Continuum as a power source, and threatened to use it as a bomb and destroy the planet. The Daleks activated the bomb and fled.
The Doctor and Amy managed to stop the Oblivion Continuum from detonating by using Bracewell's memories - which had been stolen from an actual human and contained every detail and emotion of his human life - to force Bracewell to embrace his humanity and break his android programming, thus deactivating the weapon.
Afterward, Bracewell assumed the Doctor would deactivate him as he was Dalek technology, and had "no business" on Earth. Instead, the Doctor and Amy encouraged him to seek out a normal human life. (DW: Victory of the Daleks)