@kr he wanted to kill the villains but because of his teammates and him being 'Hero' he cannot kill them. He's been holding back killing the criminals when the heroes were catching them. He started killing because his brother and the other heroes r dead so no one holds mc back anymore. And remember this place is a prison and they're criminals, so he don't think they dont deserve the treatment and he did give them a one chance to put on the control devices or surrender