Seth occupies a remarkably polysemous position in the depth-psychology corpus, functioning simultaneously as Egyptian god of chaos and necessary adversary, Gnostic celestial savior-figure, and clinical case-study subject. The tensions are productive rather than merely taxonomic. In Hillman’s archetypal psychology, Seth names the principle of darkness, ignorance, and stagnant repetition that menaces the puer’s ascending spirit—the enemy not of the solar father but of the father’s redemption, the force of avidya that drives the puer’s ruthless knowledge-quest. Jung, working through Aion and Alchemical Studies, encounters Seth/Typhon as an ambivalent deity: god of death and destruction in later tradition, yet bearer of a complex double nature in which the very force that dismembers Osiris also serves as soul-symbol. The Gnostic corpus, particularly Meyer’s translations of Sethian texts, presents a wholly different Seth: the incorruptible heavenly being whose seed constitutes the elect, who institutes baptism and, in Christian Sethian tradition, becomes clothed with or incarnate as Jesus. Banzhaf’s tarot hermeneutics recovers the paradox embedded in the Ra-barque myth: the arch-villain is precisely the one capable of defeating Apophis at the midnight hour, dissolving moral absolutes at the nadir of the journey. Neumann situates Set within the patriarchal-matriarchal conflict structuring early Egyptian myth. Across all these registers, Seth marks the site where shadow, adversarial necessity, and salvific potential converge.