Well I made my Mass Effect Shepard look like me as much as possible and the game pretty much allows me to play as I would if it were reality. I am more or less altruistic and willing to go to hell and back for my friends / shipmates but I am not afraid to punch an annoying baddy through a 100th floor window either. I do what is needed, in other words.
I called him "lion" though for a number of reasons. First of all the word "Lion" conjours up an image of noble yet savage power as well as a protector of his pride / crew. Also, my fursona is a lion.
Plus who ever heard of a hard-arsed, five-o-clock shadow-wearing, flat-topped, chiselled, scarred and all round serial baddy-twatter called "Adam". I dunno what my parents were thinking when they called me that and it's a real bitter irony when you consider I am a pretty heavy-duty Athiest!
That said I'm also known for being a bit of a wisecraker such as Joker from ME or Wash from Firefly. Also, I'm not really your typical soldier type so if I were to be "ported" directly into a game I'd probably do well as some kind of RPG character.
Someone who will join a crew / party if the reason (and the money) is right and would usually be found in a bar / pub. I like to think of myself as fiercely loyal and so if I were to join someone and I found them to be of good, moral character, I would fight until my last breath to help / protect them.
As for skills, I know my way around firearms reasonably well and have fired a good selection of (live) assault rifles and a few others, thanks to the MOD although I'd be best as some kind of driver. A driver who wouldn't be afraid to shoot someone's kneee off in an argument about a parking space! ;-)
Wardy