[@Saint Girralo] Awesome, sounds good. Perhaps Kain could be the one they've captured? Patient zero - that'd make sense... but then he breaks free, murders a bunch of lab techs, and slaughters half of the base's garrison on his way out. It would be a good way to demonstrate Kain's terrifying potential, and maybe quite a nice way to launch the RP. To save you some work on that, James' story could start with him returning to the base after a patrol to find everyone slaughtered. 

Though that's all just an early idea. Let's see who joins and what the others have planned, before we start laying down anything in concrete.