Voted "himself" because I believe he is loyal to whoever is doing best at the time, ultimately to himself though since I dont think he really cares about "defeating" the heroes but just getting by as easily as possible. I think he was a "loyal" skeletor crew but tried to join Hiss outta "loyalty" possibly the most real loyalty beyond himself. I like how 200x did him there, where he wasnt really accepted. So would turn back to skelly.
But he'd work for anyone who gave him the best deal. Enter Marzo.