Robot King (Robot King)

From Tardis Wiki, the free Doctor Who reference

The Robot King was the only survivor of a war '4000 years in the future' which destroyed humanity, left to rule Earth for the next 1000 years. He had a telepathic mind.

When the Second Doctor, Zoe Heriot, and Jamie McCrimmon came to Hope City, the Robot King was surprised to see living humans and investigated them. He incapacitated the Doctor's friends with brainwashing and faced the Doctor in a physical duel. During the fight, the Doctor managed to flip a switch which turned off the Robot King. (COMIC: Robot King)

The Robot King was one of the aliens stuck on Denossus when it was transported to the Time Vortex by the Vortexians. He would remain trapped for over twenty years until the Vortexians were expelled by the Doctor. (COMIC: Land of the Blind)