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- Immortality: Quetzalcoatl is Immortal and does not age. Though an immortal may be poisoned or slain in battle, they may live for thousands or millions of years.
Despite a grudge dating back to before the fall of Danu Talis, Quetzalcoatl contacts Bastet seeking help after Black Hawk, Machiavelli, and Billy the Kid fail to release the monsters of Alcatraz into San Francisco. Quetzalcoatl later plays a role in unleashing the Spartoi on the city, however once this plan fails he and Bastet are chased out of the city by Tsagaglalal.
- Quetzalcoatl has a long, feathered tail which he is very sensitive to comments about.
- At some point Quetzalcoatl had a falling-out with Billy the Kid, and came close to revoking his immortality.
- There is a pterosaur, a flying reptile that lived alongside the dinosaurs, named Quetzalcoatlus.