Heroic inflation names the psychic condition in which the ego, having identified with the archetypal hero — or with the Self that the hero-figure symbolises — mistakes its own grandiosity for genuine strength or spiritual attainment. Across the depth-psychology corpus the concept is treated with notable consistency yet with telling differences of emphasis. Jung himself diagnosed it as an inevitable hazard of the encounter with the unconscious: the energy released when complexes are dissolved tends to flood the ego, producing a manic, saviour-tinged expansion that mimics transformation while foreclosing it. Edinger gave the phenomenon its most systematic clinical articulation, situating heroic inflation along the ego-Self axis and tracing its mythic prototype in the Icarus story — the borrowed wings, the fatal ascent, the annihilating fall. Neumann examined its collective-historical dimension, distinguishing the depressive collapse of maternal identification from the megalomania of patriarchal, spirit-inflated consciousness. Hillman, ever the dissenter, argued that heroic consciousness itself is structurally inflationary, a solar one-sidedness that destroys the chthonic serpent and the animal depth it mediates. Moore and the post-Jungians placed heroic inflation within a developmental schema of masculine shadow dynamics, while Goodwyn observed it clinically in dream imagery where the ego casts itself as the Greatest Warrior of the Age. The term thus sits at the intersection of mythological, clinical, and cultural-critical registers, serving as both diagnostic category and critique of Western ego-ideals.