as a tabletop player, i asked the same with my character. it is a completely foreign concept that there is not something needed to be represented more in the group, and i still have trouble dealing with that, but you can't know what the other players are or what they'll do because you might not always be working in a team. there is not a lot of in fighting as far as i can see, but the potential is there. that is the most paranoid reason why there is no requirements
the big reason is, like the others have said, you do what will net you the most fun and that's what matters.
the way i got around it is i started in a group that was established, so there were roles to fill... so maybe i'm not the best at giving advice hahaha
-Adam
or James the Inconceivable/Wolf/Burn Victim