I said Team Rocket only because I don't think J counts as a team. Unless you count her henchmen.
Dim Sun, like many of the others, just come off as misguided to me. Blake Hall's plan was to hypnotize pokemon for use as an energy source, because it was the only thing they could think of that was better than oil, apparently. Although now that I think of it, the Go-Rock Squad is pretty messed up too...Gordor wanted to put an end to the Rangers and use their technology to control pokemon, just because he has personal issues with the Ranger Union Chief of Technology. But I suppose that's more immature than evil.