Kai

Kai, also known as The Collector, was the main antagonist of Dreamworks' 32nd full length animated feature film, Kung Fu Panda 3. He was a supernatural bull and the former brother-in-arms of Master Oogway and (upon his return to the mortal realm) later became a powerful evil Spirit Warrior. Thus, he could steal chi from Kung Fu warriors and turn them into Jade Zombies. His scheme was to defeat every Kung Fu master.

He was voiced by the Academy Award winning actor, J.K. Simmons, who also played Terence Fletcher in Whiplash, and Skip in Aliens in The Attic.