Psycho Mantis is a powerful psychic and one of the most memorable antagonists in the Metal Gear Solid series. He is a member of FOXHOUND, possessing telepathic and telekinetic abilities that make him a formidable foe for the protagonist, Solid Snake. Psycho Mantis is known for his eerie mask, unsettling presence, and unique ability to 'read' the player's mind by referencing save data and controller movements, breaking the fourth wall and creating a legendary boss battle experience.