there's brain bot (an absolute ass-kicker with the M72 gauss rifle), Marcus (just give him a turbo plasma rifle and the problem of party/player kills is solved) and Sulik, probably the best melee fighter in the game
oh, and btw, i found an ideal party (provided you can have 5 party members): sulik (super sledge & power armor), marcus (turbo pl. rifle or bozar for perverts
), brain bot (gauss rifle), cassidy (gauss & power armor) and goris. 2 melee, 3 ranged and your character can go somewhere in between with an adv. pwr armor and a yk42b pulse gun or a super sledge/ripper