It says in the bio here on Giantbomb that he joined a biker gang called Wolfpack Brotherhood. There is actually a Swedish gang called "Brödraskapet Wolfpack" which translates into "brotherhood wolfpack". I wonder if the guys who created the character knew about the gang, they aren't exactly a glamorous bunch of people, it's a prison gang and the stories i've heard about them are pretty spooky.

If you're swedish here's the wikipedia page about them:
http://sv.wikipedia.org/wiki/Br%C3%B6draskapet_Wolfpack