Cthulhu

Of those created by the master of horror, H.P. Lovecraft, there is no monster more well-known, or has a name more unpronounceable by the human tongue, than Cthulhu. A hulking sea god who existed before time, Cthulhu will drive all who look upon him insane. He has inspired countless cults and followers to resurrect him with the use of the Necronomicon; the book of the dead.

Halloween Horror
Cthulhu could not be resurrected in the presence of Death, and could not advance past the first round of the tournament.

Goin' Green
Cthulhu defeated Jade in the first round, but lost to Zorak in round 2.