The subject of this article or section was part of the Scourge Invasion, a world event that heralded the opening of Naxxramas in patch 1.11 or for the opening of Northrend. Once the world event has run its course, this will no longer be available.
He appears as a giant, violet, glowing skeleton with a distinctive sword. He can be found wandering in the room just beyond the Chamber of Summoning. It is highly recommended to kill the first three groups before engaging combat with him.
There is not much to say about how to fight him since he's very easy but it's worth mentioning that if there is no one to tank him, he will start shooting arrows at the group. Healers should know that he has the health worthy for a boss beyond his level so be warned to preserve your mana.