Pluto occupies a position of singular weight within the depth-psychology corpus of astrological literature, functioning simultaneously as mythic image, archetypal force, and psychological diagnostic instrument. Across the major voices assembled here — Greene, Tarnas, Rudhyar, Sasportas, Cunningham, and Dennett — the planet indexes those dimensions of psychic and historical life that resist conscious appropriation: compulsion, death-and-rebirth, chthonic instinct, transformative crisis, and the ruthless dismantling of ego-structures. Greene reads Pluto as the underworld deity whose descents are not chosen but imposed, whose encounter exposes the soul’s deepest vulnerabilities, and who governs what cannot or will not change — a profound challenge to therapeutic optimism. Tarnas situates Pluto within a cosmological framework, demonstrating extensive correlations between Pluto-cycle alignments and civilizational upheavals, from the French Revolution to nuclear annihilation. Rudhyar, writing decades earlier, interprets Pluto as the symbol of the Jungian Self’s emergence — God-in-the-depths, the agent of individuation’s final stage. Sasportas applies the archetype house by house, tracing how its destructive-regenerative polarity manifests in concrete psychological dispositions. Dennett, most recently, marshals the Pluto archetype specifically to theorize addiction and recovery. The central tension across these voices concerns whether Pluto represents an impersonal cosmic law exceeding human mastery, or a transformative potential the ego may — however painfully — navigate toward integration.