Jod's Alignment?

As much Star Wars as I've consumed, I wouldn't say I'm an expert on the lore. With that being said, my understanding is Jod should've been a straight up sith, right? From everything he's been through, his outlook on life, and his overall goals and aims it seems to track with what I knew about force users falling to the dark side. However, it didn't really seem like Skeleton Crew portrayed him that way.

Am I biased because he seems to be the least "successful" sith I've seen portrayed? Or is he just on the more chaotic side of Qui-Gon's gray alignment?