Tatsumaki, alias Terrible Tornado, holds the rank of S-Class 2 in the Hero Association. She wields immense psychic power as an esper, recognized as one of the series' most formidable heroes. Taken from her adoptive parents at age seven by Tsukuyomi group scientists, who paid for her, she endured confinement and experimentation. Cooperation earned toys or candy; requests to go outside were denied, and uncooperativeness meant imprisonment. During a monster outbreak when she was ten, she remained locked in her cell despite having the power to escape, later admitting she withheld her abilities hoping the scientists would deem her useless and release her. Blast rescued her during this incident, advising her never to rely on others for salvation and to protect her younger sister, Fubuki. This forged her fiercely independent outlook. Tatsumaki maintains a notoriously abrasive, arrogant, and impatient demeanor, frequently insulting colleagues and dismissing their capabilities. She exhibits a strong superiority complex, believing she can handle threats alone and often criticizing strategic planning or teamwork. Yet she shows unwavering dedication to hero duties and protecting civilians. Her personality stems from her traumatic past and Blast's advice, resulting in social isolation and difficulty forming connections beyond Fubuki. Despite her harsh exterior, she harbors deep, often clumsily expressed care for her sister, intervening to save Fubuki from monsters like Do-S and Demonic Fan, though her overprotectiveness and criticism strain their relationship. Fubuki's declaration of wanting to save her as a hero did evoke a rare moment of somberness and happiness in Tatsumaki. Her interactions with other heroes are largely contentious. She shows rare respect for Blast and King but clashes with most S-Class colleagues, particularly belittling Sweet Mask and initially dismissing Genos. Her relationship with Genos shifted significantly during the Monster Association raid; after he aided her against Psykos and Orochi, saved her multiple times, and endured injury, she began addressing him by name, expressed concern for his condition, and demonstrated genuine respect. She frequently antagonizes Saitama, insulting his rank and becoming infuriated when ignored. An earlier encounter at a festival haunted house saw her mistake him for a ghost when her powers failed against him, while he mistook her for a lost child. Tatsumaki's story involves numerous major conflicts. She effortlessly defeated the Ancient King by summoning a meteor. During the Alien Conquerors invasion, she attacked the Dark Matter Thieves' spaceship, redirected its missiles, and confronted Saitama after the battle, slamming Genos into a wall when he defended his master. In the Human Monster Saga, she intervened in Fubuki's fight with Do-S, immobilized the brainwashed attackers, and later killed the Hundred-Eyes Octopus in I-City, drawing criticism from Flashy Flash. The Monster Association raid showcased her pivotal role and limits. She advocated extreme measures like reducing Z-City to rubble, disregarding hostages. During the assault, she swiftly killed Evil Eye and confronted Gyoro Gyoro, discovering it was Psykos controlling a puppet. After extracting Psykos' real body, their battle merged with Orochi's resurgence. Despite injuries, she protected other heroes by lifting them to the surface within psychic barriers and uprooted the entire Monster Association base. Facing the fused Psykos-Orochi entity, she employed strategy, creating a rock dummy to distract it while targeting its energy-absorbing tendrils. Exhaustion eventually overcame her during this prolonged battle. Her psychic abilities are unparalleled among espers. Primary powers include high-level telekinesis, enabling her to effortlessly manipulate massive objects like meteors or entire city sections and achieve high-speed flight. She generates potent psychic barriers for defense and power suppression. Her physical capabilities encompass immense speed, reflexes, endurance, and pain tolerance, evidenced by dodging energy beams capable of slicing the planet's surface and continuing to fight despite significant injury and energy depletion.