Lavenderism

Before Temujiin conquered so much of the world and his traces gave birth to a new god from his energies, the god of war was an older and more cruel deity that was once a king in pre-colonial Mexico. He had done something during his time alive that allowed him to challenge whatever god of war existed before and take his place. He brought along to hell all those who had committed suicide after his death to be with him in the afterlife, and he ruled over a large pyramid in the underworld that he treated just the one he had on Earth.

Eventually, the god of war became bored with his existence. He was not making anything happen because he did not see godhood as anything besides an easy immortal life. He became bored with what he had and eventually when Tayang was formed as the spirit of a tiger in Hell, he saw that he could easily defeat this man and take the title of the god of war from him. He challenged him to a duel and before anyone could think, his sword had slain the god. Tayang immediately rose to become the new god, and those who followed the old god that had died immediately had their bodies decompose leaving them as nothing but painted skeletons. They were expelled by Tahyang from the Steppes of Elysium and ended up wandering various parts of the underworld. The slain god is said to have survived in some way and his old followers continually attempt to revive him.