Kierrok

Kierrok is a fictional demon and a one-time antagonist featured in comic books published by Marvel Comics. He is associated with the X-Men line of comic book titles and first appeared in The X-Men #96 in December, 1975.

Biography
Kierrok was the demon leader of a breed of interdimensional creatures known as the N'Garai. This creature was purportedly aeons old and once held dominion over mankind. Kierrok rested beneath the earth and was awakened when the X-Men leader Cyclops unearthed the N'Garai cairn, which had been buried beneath the Xavier estate in upstate New York. Kierrok attacked Cyclops, which then drew the attention of his teammates in the X-Men. Storm, Colossus, and Nightcrawler each took turns attacking Kierrock, but ultimately it was the savagery of the Canadian berserker Wolverine that finally ended him.

Appearances

 * Uncanny X-Men 96