Character ideas I'm tossing around:

1. A dude from England that's basically the The Invisible Man from that one novel. His style will be stealth, and taking out threats quickly and silently.

2. A dude based off Afro-Samurai. He'll have a katana, and a revolver, and he'll be all about getting close to enemies, and deflecting their bullets. 

3. A sniper chick... I'm not sure yet.