I would call that neutral evil actually. It doesn't seem like he actually cares about the transgressions of his victims, he just knows that society won't punish him for his actions. He's maximizing harm while protecting himself.

Of the ones I watched, it mostly seemed pretty fair. The leprechaun wanted people's souls, which would presumably involve infinite torture. Probably not as bad, but the leprechaun probably wasn't just going to do it once. He did make the Medusa's imprisonment extra uncomfortable, but it doesn't seem significantly worse than what she was trying to do to him. It's not clear what the succubus would do, but I'm guessing she just kills them. And he made her death a little worse than needs be, but ultimately dying is the worst part of it and she's presumably killing people regularly.

Though the pegasus seems to be an exception. What he was doing probably was on par with the punishment he got, but I don't think the barbarian knew anything about it. The best I could say is maybe the barbarian didn't know he was sapient.

Still, he doesn't seem like a good person.

The first couple were fun, but as the series continues it gets more and more unsettling.

Why do you say that?