I'm pretty open to whatever theme people are interested in.

If we're going for Cruisers/Light Heavyweights I'll probably do some sort of Great Muta rip off.  Keiji is my favorite.

If we're going for bigger dudes I'd probably either do a like chop heavy, slam heavy, old school type or an old character concept I have for an over the hill American Wrestler, basically Macho Man but he wears a mask.

I've joined a few RPs like this over the years so I have a few character sheets or at least like CS starters I could work from, depending on the general vibe.  Maybe a tag team, or a like Main Guy and a workman/Jobber.