I might be in, I like the sound of a Russian mafia. It's a little edgier than just an Italian Mafia in my eyes, at least- the idea that these people are a little more dangerous, and a little more mad. Not too sure why, but I think Italian branch is overdone these days, and the Russian Mafiya is just a little scarier. I could be wrong. 

I would be up for either the vigilante, or perhaps an enforcer of sorts in the Mafia.