I mean, yeah, he hurt Liam and killed Liam, he also kidnapped a lot of objects, but he said he wanted ONE to be "Fun" he said he didn't mean for it to be brutal and uh... kidnap.. like.
He is definitely still a villain. Even if he didn't see it as wrong, that's still a lot of harm that he didn't feel any sort of remorse for. No doubt about it, man's a villain.
Definitely a villain. Airy still didn't think to send the contestants back to their homes, even when they begged. Airy couldn't see what he was doing is wrong. And he practically didn't care when he murdered a child. So, in other words, while I do like Airy, Liam is right, and he is just "Some sociopath."