Mangog

Mangog is a fictional monster and a character featured in comic books published by Marvel Comics. He is part of the mainstream Marvel Universe and is a foe of Thor.

Overview
Mangog was a large monstrous being with brownish orange skin, three clawed fingers on each hand, two clawed toes on each foot and a long prehensile tail. He could stand anywhere between 12 and 25 feet tall and possessed a strength level that could even rival that of Thor. Mangog's essence came into being as part of the coalescing effect of billions of people who lost their lives at the hands of All-Father Odin. As a resevoir of conjoined vengeance, Mangog's existence has been completely fueled by hate, and sought nothing less than the death of Odin and the destruction of all he held dear.

Biography
Mangog aligned himself with the wizard Igron, who used his magic to alter Mangog's appearance, making him look just like Odin. He then replaced the real Odin with Mangog, who wielded his new-found power with inscrutable cruelty and mercilessness.