Thanos possessed incalculable superhuman power. By far the most powerful of the Titanian Eternals, Thanos was a mutant whose massive, heavy-bided body was born with the capacity to synthesize cosmic energy for certain personal uses. (This is a trait that Thanos shared with his father Alars and all Earthborn Eternals but not with Titan-born Eternals. Through still unknown bionic amplification, Thanos increased his physical strength and resilience to levels surpassing even the strongest of the Earth Eternals. Through meditation and certain mystical techniques, Thanos augmented his power in still other ways, enabling him to tap, transform, and direct vast quantities of cosmic energy for destructive force. His skin in nearly invulnerable, particularly against heat, cold, electricity, radiation, toxins, aging, and disease, and he can survive indefinitely without food or water even before his "curse" from Death left him immortal, unable to die. His mind is also invulnerable to most forms of psychic attack, and can project a psionic blast of energy as well as blasts of plasma/cosmic energy from his eyes and hands. Deadliest of all Thanos's attributes, perhaps, was his mind, whose superhuman level of intellect was totally dedicated to the annihilation of life.