Within the depth-psychology corpus, Mars occupies a position of remarkable ambivalence: simultaneously the most psychologically disruptive and the most vitally necessary of the planetary archetypes. Thomas Moore, reading through Ficino, establishes the foundational tension: Mars is at once the ‘collective culprit of the psyche’ responsible for rage and strife and an indispensable ‘fortifier of the soul’ whose heat emboldens love and sustains magnanimity. Liz Greene extends this into mythological substrate, tracing Mars back to the chthonic realm of the Great Mother — a pre-solar, instinct-saturated force associated with Ares and the phallic earth-father — and linking Mars-Pluto aspects specifically to ruthless, unconscious aggression. Howard Sasportas maps the same archetype across the twelve houses with clinical granularity, demonstrating how Mars differentiates in expression from the overtly self-assertive first house to the crusading eleventh. Donna Cunningham brings a therapeutic pragmatism: Mars governs directed energy, anger, desire, and self-assertion, and its suppression reliably produces depression, psychosomatic illness, and passive-aggression. Carl Jung situates Mars within synchronicity research, examining Mars-Venus conjunctions in horoscopes of married pairs as empirical data. Across all voices, the central tension persists: whether Mars is an archaic, dangerous intruder from the unconscious requiring containment, or an essential soul-force requiring integration and conscious direction.