Tatsumaki operates as the S-Class Rank 2 hero Tornado of Terror. Her childhood was marked by trauma; scientists took her at age seven from adoptive parents who accepted payment, imprisoning her to study emerging psychic powers. Confined and experimented on for years, she received toys and candy for cooperation but never freedom. A monster attack at age ten left her helpless until Blast rescued her. His advice against relying on others deeply shaped her, motivating her eventual Hero Association membership where she reunited with esper sister Fubuki. Petite at roughly 150 cm (4'11"), her childlike stature often causes mistaken identity. She has striking emerald green eyes and curly green hair, typically clad in a form-fitting black dress featuring leg slits and low-heeled shoes. Arrogant and impatient, she dismisses those deemed incompetent, especially lower-ranked heroes. She reacts violently to disrespect like being called "brat." Despite this, she maintains a strong heroic duty, actively seeking missions and growing bored when idle. She cherishes Fubuki, though expresses this through stifling overprotectiveness that strains their bond. Her inability to psychically affect ghosts induces a genuine fear. Tatsumaki wields prodigious psychic power, recognized as the series' strongest esper. Her telekinesis achieves multi-continent feats, like twisting Z-City during the Psykos-Orochi battle or lifting the Monster Association base from 1,500 meters underground. She generates defensive barriers resilient against continent-rending beams and 300x gravity, crafts telekinetic spears from debris, and employs extrasensory perception across vast distances. She manipulates internal bodily substances, demonstrated by reshaping a pill inside Fubuki. Additional abilities include flight, telepathy, limited power mimicry via copying psychic wavelengths, and relativistic attack speeds for thrown objects (though friction incinerates projectiles). Physical vulnerabilities include average human durability without psychic augmentation and powers that falter after direct head trauma. Psychic binding suppresses other espers, while whirlwind techniques deflect attacks. The Hero Association rates her combat effectiveness and fighting ability at maximum. Key relationships define her. Her dynamic with Fubuki mixes deep concern with oppressive control; Tatsumaki undermines Fubuki's autonomy, viewing reliance on allies as weakness. She profoundly respects Blast due to her rescue, interpreting his advice as justification for extreme self-reliance that isolates her. She initially scorns Saitama for his B-Class rank and dismisses his strength, though failing to levitate him hints at his abnormality. She disregards most S-Class heroes but develops grudging respect for Genos after their Monster Association raid cooperation. King receives rare deference for his perceived power, though she criticizes him when annoyed. Character development surfaces during the Monster Association arc. Initially dismissive of teamwork, she coordinates with Genos to rescue hostages and fight Psykos-Orochi, acknowledging his contribution and using his name—a marked shift from prior disdain. Despite severe injuries including stab wounds and psychic exhaustion, she persists, displaying enhanced endurance and pain tolerance. Protective instincts emerge as she prioritizes hostage safety, limiting her power to avoid collapsing the base prematurely. Post-arc interactions with Fubuki show subtle shifts, including somber appreciation for Fubuki's vow to "save her as a hero," hinting at potential emotional growth. Creator ONE notes her capacity to defeat Golden Sperm at full strength, cementing her status as humanity's critical defense. Trivia highlights her obsession with candy apples, attending festivals mainly to acquire them, and a cameo in "Mob Psycho 100" during an esper explanation. Her Hero Association statistics show maximum combat ratings alongside average physical strength and intelligence scores.