Well he isn't lvl 50 either, he conned dark blue to my level 43 shadowknight. He had a ton of hit points and double attacked for 172. Traitor didn't cast any spells just straight melee. Took awhile to beat down with a 65 shaman slowing for the 43 SK :)
The head is for the Warlord Mancatcher quest for Iksar warriors. The Iksar Traitor is a renegade necromancer you have to kill on orders of Master Rixiz.