Tartarus

Tartarus, aka big fluffy monkey, dumb ape, marshmallow man, dumbass, monster, mallowface, longtooth mcdumb, fuzzy buzzy gut wrencher, Lotso Huggin' Bear, chieftain of the dumb apes, mr. fluffy, teddy, fuzzy, gummy bear, mohawk, baldie, afro-lackin', Chewbacca wannabe, furball, rukty grunt-guzzler or dirty macsquirty, was the chieftain of the Brutes until he was bludgeoned to death by the Arbiter.

He owned a giant gravity hammer called the Fist of Rukt, which fell into the possession of a grunt after Tartarus was slain. He tried to activate Halo Installation 05 but was intercepted by the Arbiter and Sergeant Johnson and his fur was set on fire by Johnson's beam rifle, and he was beaten to death by the Arbiter with his own hammer.