Hooper

Hooper was the leader of SEMME's Squadron 37 (formerly a member of Squadron 88), whose crude and bizarre ways of speaking- not to mention his hitting on every female around- suggested he spent too much time on some bad Internet chat rooms. Hooper was either fully or nearly killed during the attack on the Martians' underwater city, and either became or assumed the persona of a brain-eating zombie shortly afterward. During a mission to find the Anti-Head Alien, Hooper fully snapped (possibly under the control of the Martians), and killed all his teammates as only a zombie can, only to be slain- permanently- by Lith.