The gods made Tlaloc's sister be the sun. She was Coatlicue. She was (extremely) jealous so Quetzalcoatl struck down the sun it poured rain every were and everything was destroyed.
A proud god named Tecucizrecatl offered to be the new sun, but the other gods preferred Nanahuatzin. A great fire was built, but Tecucizrecatl was afraid to jump, so Nanahuatzin went in. Tecucizrecatl became jealous and went chasing after him. The gods threw a rabbit in Tecucizrecatl's face and Tecucizrecatl became the moon