Lieutenant Grummus

Lieutenant Grummus was a level 59/69 elite abomination serving the Horde in Alterac Valley.

He was situated in the southern part of the Field of Strife.

Unlike the Forsaken serving the Horde who are classified as humanoid, Grummus was susceptible to anti-undead spells like Turn Undead.

He was removed in patch 2.3.0, along with the other Commanders and Lieutenants in Alterac Valley.

Trivia

 * Its possible his name is a reference to the Grimace, being that they share a very vaguely similar shape and colouring (Note Grummus' slight purple hue).
 * Grummus may also be a reference to an NPC of the same name in Everquest who shares a similar appearance.