Venn, you're still interested?
I stated up
Mike Tyson as a bigger-than-thou boxer; Couple levels of Ogre combined with Titanic Creature fits the images from Punch-Out!! of the opponents towering over Little Mac, and helps with giving him a powerful right hook. Paragon levels help sell the "World Heavyweight Champion" aspect. Wasn't sure whether to focus on Paragon two-weapon fighting or Paragon Fencing, and not sure if both can technically be combined with unarmed strike since it's still technically one weapon; however, I left it open until I could decide. As such, it's only mostly finished.
At the same time, the character's class features are virtually non-existent. He punches hard, and that's it. The build isn't terribly different from other characters I've played. Other than the amusing aspect of playing a PbP version of a video game version of a real-life person, there's little that's interesting about the character. He's just a gimmick. I couldn't find any other classes that fit the concept well enough, either.
It sounds like you might have plenty of interest without me. I've got concepts to work from, but I'd hate to hold you up just because the one I came up with already no longer interests me.