Starfox can psionically stimulate the pleasure centers in nearby people's brains, making them calm and open to suggestion using his persuasion skill. It has been suggested that when in physical contact, and there is direct line of sight between the subject and the target, Starfox can use this euphoria effect to cause a person or persons to become infatuated with him, objects, or people of his choosing or simply to make others feel good while in his presence. Notably, the euphoria power does not work on his brother Thanos. His psionic powers are possessed to some degree by all Eternals, but he developed them in his own unique manner. Starfox's mental powers do not work on beings whose brains do not have pleasure centers. These powers were later shut off at Eros' request to prevent them from being abused, but somehow returned prior to "Avengers: Rage of Ultron".