Huh. I do not have this one! In fact, I don't think I've ever even seen it! And this isn't like that last time where it turned out I really did have the game; I would remember this if I had it.
Anvil: National Guard or Militia dude
Erika: Early 90s power exec with an infomercial Katana
3a3a: Leona Cantrell from Predator 2
Viper: Janitor in a ski mask
Rigg3: Reject from Grease
Carlo3: Hispanic flasher with a shotgun
Gabriella: Jazzercise fugitive