Rulk. A Red Hulk. Kinda stronger than Green Hulk, and the opposite, as he's bad, not good. Or however that works.
While I find Rulk to be hilarious at times, I also think he's one of the most ridiculous characters ever created in any medium. So yeah, I guess I have mixed feelings about him. Some of the things that happen with him I can't believe are canon. Like punching Uatu.

Here's one I like just because his ability makes absolutely no sense at all.
The Turtle. He's a Flash villain. You know, the guy who can run like, the speed of light? The Turtle is a villain whose ability is strategic slowness. Yeah.