Quetzalcoatl was the second sun (or the third there are different versions)
Now for the fifth sun story, all the gods gathered at Teotihuacan and they started arguing about who was going to throw himself into a fire, many of the most elegant and powerful gods claimed to do it but when they were about to jump they stepped back, but then Nanahuatzin who was a deformed and sick god agreed to do it, so he threw himself into the fire and after him went Tecuciztecatl a rich and good looking god, they became the sun and the moon. But the sun was not moving so the gods sacrificed themselves (or were killed by the sun) in order to give it movement.
"I HATE THE WORLD AND IT HATES ME TOO"
Loser of Mithrandir_88's Non-Award for Losing the "Whoever Gets the Last Post Loses" Thread
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Co-Author of the Aztec Civilization Outline for AOM