How's this look?
Just click, save and print!
AB = Attack Bonus, FB = Feat Bonus. The square marked FEAT next to each ability score is for one's total of ability modifier + feat bonus. The little squares for each power is for whether the power is permanent, limited or single-use.
Here's a version filled out for Captain Triumph!
I'm also looking into setting up a message board for MM!. I figure it can't be too hard, but I've never looked into it before. We'll see. In the meantime, I'm going to set up a specific Mystery Men! page on this blog, where I'll throw in errata, a link to the downloads, etc.