Not many living people can claim they've killed over ten thousand people. And not just killed people, he's fucking massacred them, twisting their organs, supercharging their bloodflow to explode their veins, and other things straight out of a stupid horror movie too monstrously violent to be true, except it is.
Yeah, he's a fucking textbook psychopath.
He doesn't care though. He doesn't wake up sweating, remembering their faces, cold and still. He doesn't want to tell them to give up this crazy thing so they don't have to die. He doesn't want to not kill them.
Except sometimes he does.