Mohawk

The Mohawk is an extremely powerful class whose attacks come from its incredibly good looking hairstyle. The Mohawk class was hacked into World of Warcraft by Mr. T, who is pretty handy with computers.

Wrath of the Lich King
When haircuts were introduced to World of Warcraft, night elves were able to get the mohawk haircut featured in the eponymous commercial.

On November 16, 2009, an NPC named Night Elf Mohawk appeared just outside all starting areas looking exactly like the night elf warrior in Mr. T's commercial, along with the Mighty Frostsaber said warrior rode in the commercial. He hands out Mohawk Grenades in stacks of five, which cause all players in the targeted area to don masks that look like the head model used for Night Elf Mohawk.