Christopher Wallace

 was captured by some sentient rats. He was experimented on and tortured by them. He created the rats, so they trapped him and kept him alive to see how the world would be under their rule. When Tegan was placed in his cell he said he hadn't seen another human in a while. He created them for war. He wanted to warn the world about the virus the rats were creating. He sacrificed his life so that he could destroy rats. (AUDIO: Rat Trap)