If I see another person claim Fuecoco is gonna turn into Quetzalcoatl I'm gonna cry
There's very little, basically zero, associations between Feathered Serpents and fire. As worshipped by the Aztec, Quetzalcoatl was tied to learning and high culture: Priesthood, song, poetry, etc; or to the wind in his Ehecatl aspect. Across Mesoamerica in general, Feathered Serpents represented a dualism and boundaries/transgressing of the heavens and earth with the avian/serpent theming; to the Teotihuacanos feathered serpents also had aquatic associations.
I talk more about this and "white god" stuff here
desuarchive.org/a/thread/193107477/#193118717 ; though I wasn't able to finish, you can see what would have been my final post here:
pastebin.com/0wPxh1MF (I also forgot to mention how since speech is shown as spiral wind gusts in aztec art and likewise conches blow air and producing sound, the cultural/wind themes tie together. Note also the spirals of a conch shell/the wind jewel also visually tying into speech gusts, the step fret, waves, or a winding snake see pic, which ties into teotihuacano associations mentioned in the dump),
If you want a Mesoamerican fire snake, you want Xiuhcoatl, a fire/lighning rattlesnake often depicted alongside solar disks, and which was used as a weapon by the war god Huitzliopotchli in a myth where he killed his sister/brothers as an allegory for the sun rising over the moon/stars (per most interpretations, tho that may actually be incorrect). Xiuhcoatl as a weapon is usually described as a zoomorphized atlatl, where the darts would be like lightning bolts (Xiuhcoatl is associated with the dry winter season where lightening causes bush fires) or shooting stars/meteors, but I've read/seen some alternative interpretations, such as that associate him with time or even as a caterpillar