I prefer to be the huge, enthusiastic bruiser. You know the one; The guy that screams while he bashes skulls in and rips things apart: And loves every minute of it. Sometimes it's just fun to play a character that's mostly braindead: Friendly enough, a very effective comrade, but their solution to everything is PUNCH.
I do sometimes like to change it up with a more intelligent or streetwise character; Speedy rogue types, more focused on technique and quick thinking instead of brute force. With a supportive charisma that occasionally backfires with horrible or hilarious results.
Though it wasn't asked, I dislike playing mages and other magic-using sorts for the most part. I'm huge on melee combat; I love writing about enemy fodder being brutalized by a huge brute, or outplayed by a street rat. As cool as magic is, people tend to be picky and bitchy about it even in PvE situations, so it's not worth losing the creativity brought on by just being physically capable of a lot of feats.