User blog comment:SigmaAlphaThree/100 Questions for the traitor Arkanov/@comment-7270135-20160103232532/@comment-7270135-20160117211822

Mettaton's just a funny character too, he's programmed to murder you but he's also a host of all these TV shows, so he has to try killing you in all these ridiculous set-ups like using your soul as an ingredient on his cooking show or something like that. But yeah, Eris is definitely going to be quiet and incapable of most emotion.

He really does want to hate River, but he just can't bring himself to do it because of how much she reminds him of his own little girl many years ago, so he tries to ignore her thinking that those problems will go away. Also… I was thinking that Leviathan granted him the gift of an extended human life after sacrificing his daughter, as a "thank you", but really he did it to be a dick so that the shaman could feel even worse by living decades knowing he let his kid die.