The project has a forum on the crusadercast.com site:

http://crusadercast.com/marvel-2099-fall-of-the-hammer

So far, we've got six characters assigned, although some weren't part of the Fall of the Hammer comic crossover that we're hoping to make a game on.  But we could still use help, if not this; then a possible back up project set around just the sprites/stages we can get.  I've also posted the original 2099 comics there, from the start to the crossover so far, if that helps ("Marvel 2099 Comic Scans" and then "Marvel 2099: Fall of the Hammer Comic Scans" threads; more scans coming soon). 

Thanks.