Well there's Bruce Kibbutz from GTA4...he needs to lay off the steroids a tad. I prefer knocking around with Little Jacob - he's relaxed and usually has something interesting to say!
Roman's a bit of a pain in the onions, too!
Butch from Fallout 3 - What a knobend! Nice jacket he gives you though...
Also, pretty much everyone from Need for Speed: Most Wanted, with the exception of Rog. All the Blacklist members (who get to speak) are over-confident, brash, rude, high on their own self importance and have all the depth and charisma of a spider's piss-puddle. Just like most of the "Max Power" fraternity then...
Wardy