Hey [@Landaus Five-One] [@Smike]! Glad to have your interest! 
As for roles, it depends as since this is a PvP-encouraged roleplay (you're all competing against each other to score a payday). But, we have a fair share of Human and Terran/Other characters, mixed bag of Genetically-Enhanced / Psi-Potent, and I have a secret Bio-Weapon character I'm going to reveal when we reach the facility where our target is. 

Long story short, safe to say you can pick whatever you like. And if you need help, just drop me an @ or a message; I can give you a hot link to our Discord server where Xiga, IronHeart, The Jest and myself already hang out if you like. :)