User blog comment:ADour/First official image of and synopsis for Guardians of the Galaxy!/@comment-4652104-20140101200605/@comment-4652104-20140103180640

Killian and Skull certainly are. I don't know about Malekith, haven't seen the movie. Loki seems to have some other mental disorder. However, I'm not sure that's what people would call them. The common understanding of the word psychopath has little to do with the actual medical term.