Buffxolotl was the one who helped mush the rock and stone that makes up the Earth and Moon and Planets and shit. He was crucial for the creation of the universe because the other gods got really bored of just empty nothingness. Especially with the lack of solid ground causing all the living stuff to just die.
When he wasn't building or working out, he studied philosophy.
Joined 7th.
Also died in the Battle of The Gods.
He was not the ruler of anything.