Alien: everyone was great, except Lambert who was a whiney bitch, she deserved to be ass raped by the aliens tail
Aliens: again many great characters, Ill go with Hicks who was basically my childhood hero
Alien 3: Clemens (killed off immidiately after some much needed character development), Morse, Dillon and Golic, the only stand-out prisoners. Morse gets extra points for being the only survivor and telling the company to go fuck themselves in the end.
Alien: Res: Elgyn, Christie and Johner, the badass half of the Betty.