Quetzalcoatl, the Mesoamerican feathered serpent deity, occupies a recurring and symbolically charged position across the depth-psychology corpus, functioning simultaneously as culture hero, fallen king, sacrificial victim, and archetype of psychic transformation. Joseph Campbell treats the figure most extensively, deploying Quetzalcoatl as a paradigmatic illustration of the hero’s inevitable dissolution—the golden-age ruler who, confronted by his shadow-antagonist Tezcatlipoca, beholds his own degraded image in a mirror, succumbs to intoxication, transgresses, and departs into exile, his heart apotheosizing as the Morning Star. This narrative arc serves Campbell’s broader comparative argument about the universality of the dying-and-rising cycle. Erich Neumann, working from a different theoretical axis, reads the Quetzalcoatl myth as a clinical specimen of the son-lover’s defeat by the Great Mother: the seduction by Xochiquetzal precipitates a regression into uroboric incest and self-destruction, exemplifying the negative-feminine archetype’s devouring power. Jung references Quetzalcoatl only briefly but significantly, noting the miraculous conception via precious stone as cognate with saviour-birth symbolism cross-culturally. Von Franz invokes the deity within cosmogonic contexts—Quetzalcoatl and Tezcatlipoca as co-creators who transform into trees and retire—linking the figure to creation-myth psychology. The central tensions in the corpus concern whether Quetzalcoatl is primarily a hero-cycle exemplar, a son-lover regression case, or a cosmic-duality symbol.