Ījuacol

The Ījuacol, also known as "The Forged Beast" is an ancient doomsday device created by an even older race.

Millions of years ago, its creators were at war, and a bitter stalemate stood between two sides. At least, that was until one side created the Ījuacol.

Being a psychic species, they were able to predict that mammals would rule the world, should they become extinct. Therefore, the creators made it resemble ungulates, some carnivores, and humans. Like its manufacturers, the Ījuacol was able to see into the future.

However, it saw the evil that humanity would come to do. Because of this knowledge, it went berserk, bringing forth volcanoes and summoning a meteor that would come to wipe out the dinosaurs. In its fit of rage, the Ījuacol had driven its creator species to extinction; there were only a few left, and they couldn't reproduce.

That didn't mean they still couldn't try to lock it up. Therefore, the few survivors bound the Ījuacol in chains and shut it away. Even though they succeeded, they didn't do so without sacrifice. Most of the survivors were killed in the process.

Hundreds of thousands  of years later, man arose, and when he did, the Ījuacol found out. Needless to say, it wasn't overjoyed, so, after millennia of fighting and writhing against chains, the Ījuacol broke out and killed the first human, and wore his skull as a trophy.

Unfortunately for the Ījuacol, it was a few generations too late. Mankind had already blossomed, and, to top it all off, the Ice Age was present. The Ījuacol can't function under cold temperatures. All the giant, flaming beast could do now was slumber once more until the time is right…