Leilah Abelman I'm not so sure. He was definitely very damaged by whatever the scientists did to him, but I think he did care about Nico.
Amy Thompson I"m a clinical psychologist who has worked in prison and, yes, he is. Using others to serve his needs, as if they are disposable, even family/friends, charming, lies convincingly, not easily flustered by what would fluster most, etc. The question is how/why, born that way/became that way. Either way, he's damaging, even if he is this way because he's damaged.