Davros (Unbound Universe)

Davros was a Kaled. He was crippled after being attacked by alien force that was later revealed to have been the Quatch. He left Skaro due to his disappointment in his creations. He willingly went to the Quatch when they invited him to help augment their own technology, and saw that the race had far more potential them than his own Daleks. (NOTDWU: Masters of War)