Quatzequatel(meso american) aslo represented by a Serpent.
Viracocha (south american) represented as a feathered Serpent.
Why would so many people represent their primary deities with such slithery slimy and often poisonous animals.
It's all about rebirth and healing. They can kill but also shed to become new again. Numerous myths but the Greek ones I know best, Asclepius the healer, he has the one snake on the stick, he is medicine, the myth goes he could heal people with the snake, too many people were not dying, Hades got annoyed, so Zeus made it so Asclepius couldn't bring anyone back to life anymore with the snake(bite). Even now we see, the anti-venom is the actual venom of the snake.
In honor of Asclepius, a particular type of non-venomous snake was often used in healing rituals, and these snakes — the Aesculapian Snakes — crawled around freely on the floor in dormitories where the sick and injured slept. These snakes were introduced at the founding of each new temple of Asclepius throughout the classical world. From about 300 BC onwards, the cult of Asclepius grew very popular and pilgrims flocked to his healing temples (Asclepieia) to be cured of their ills.