Real Name: Atsuhiro Sako. Alias is Mr. Compress League of Villains, Vanguard Action Squad, Paranormal Liberation Front Personality: Showman, dramatic, deeply loyal to his comrades, treats villainy like an elaborate stage performance.Lineage: Great-great-grandson of Oji Harima, the legendary "Peerless Thief" .Quirk & Abilities Compress (Emitter-type): Allows him to shrink anything within a spherical area around his hand into a tiny, lightweight marble upon physical contact.Reversal: He releases items or people by snapping his fingers or wishing it.Combat Style: Relies on high intelligence, stealth, misdirection, and agility rather than brute physical force Signature CostumesStandard Outfit: He wears a yellow-brown trench coat with a high collar, dark brown trousers, and white boots. He tops this with a dark top hat and a pale red feather. He always wears a mask and a pair of white gloves. He uses various masks to conceal his identity, most notably a white, expressionless mask with geometric patterns (like a vertical line down one eye or a crescent moon shape).True Face: When unmasked during the Paranormal Liberation War, he is revealed to be a handsome, middle-aged man with sharp features, short dark hair.

Tall, lanky, with black hair (later turned white) and extensive purple, burnt skin patches fused to his body by staples.Affiliations: Formerly the League of Villains and a lieutenant of the Paranormal Liberation Front. Quirk: Blueflame (Cremation) Intensity: His blue flames burn much hotter than standard red flames, scaling higher with intense emotional hatred.Weakness: He inherited his mother's resistance to cold rather than fire, meaning using his own high-temperature Quirk severely burns and destroys his own body.

Small-framed girl (5'2") with messy blonde hair styled in messy buns, sharp golden-yellow eyes, and a constant feral grin. Wears a sailor-style school uniform with a cardigan and a metallic-smiled face mask.Mindset: Appears bubbly and childlike, but hides a deeply sadistic, murderous nature. She believes that wanting to "become" or consume the people she loves is a pure form of affection.Quirk & Abilities Transform: Allows her to morph into a physical duplicate of any person whose blood she has ingested. More blood grants longer transformation times.Quirk Awakening: Gains the ability to use the specific Quirk of the person she has transformed into. Combat Style: Highly agile and stealthy, specializing in close-quarters knife combat and blood-draining tools.

His entire physical form is composed of a dark purple or black mist with glowing yellow eyes. He wears an elegant, tailored gentleman's suit with metal neck-brace plates around his collarbone.Demeanor: He acts with calm, polite, and formal manners like an attentive bartender, often acting as the voice of reason or a caretaker for the chaotic Shigaraki.Quirk and AbilitiesWarp Gate (Transformation/Artificial): Kurogiri generates a swirling fog that functions as a portal. He can teleport anything or anyone across great distances as long as he knows the coordinates.Tactical Intellect: Beyond transport, his portals are devastating in battle, allowing him to split up enemy heroes, evade attacks, and rescue fellow villains from tight spots.

Appearance and PersonaThe Hands: Initially, his look is defined by pale, cracked skin, light blue-white hair, and embalmed corpse-hands clutching his face, neck, and limbs as reminders of his trauma and rage.Psychological Evolution: He starts as an, impulsive, petulant foil who acts out like a frustrated child. After facing internal struggles, defeats, and realizations about hero society, he matures into a cold, terrifying force of absolute ruin and Izuku Midoriya's ultimate archenemy.Powers and AbilitiesDecay Quirk: His original power allows him to turn anything he touches with all five fingers into dust. Later in the series, it awakens to spread rapidly through whole cities and masses without direct physical contact.

Look: Large, lizard-like mutant with green skin, sharp teeth, and a hunched posture. He originally wore a patchwork outfit and carried a massive, makeshift sword composed of various stolen weapons.Motivation: Initially inspired by Killer Stain’s ideology of purging false heroes, Spinner felt lost and outcast due to severe societal discrimination against mutant-types.Loyalty: His allegiance shifted from Stain's philosophy to a profound, personal devotion to Tomura Shigaraki, finding genuine acceptance and a sense of belonging within the League.Quirks and AbilitiesGecko (Original Quirk): Allows him to cling to walls and vertical surfaces like a real gecko. It is a relatively weak physical quirk that offers limited combat utility.Body Bulk (Additional Quirk): Granted to him by All For One, allowing him to massively increase his size and physical muscle mass.Scalemail (Additional Quirk): Also bestowed by All For One, enabling him to cover his body in sharp, blade-like scales that heavily boost his defense and offense.Drawbacks: Holding multiple Quirks heavily strained his mind, occasionally turning him into a raging, giant monster during the final conflicts.