Fubuki, alias Hellish Blizzard, is Tatsumaki's younger sister. At age two, she witnessed Tatsumaki's abduction by the Tsukuyomi research group. Three years later, Tatsumaki returned after being rescued by Blast and slaughtered Tsukuyomi members before Fubuki's eyes, triggering Fubuki's fear of her sister and awakening her latent psychic powers. During high school, Fubuki befriended Psykos. At seventeen, she sealed Psykos' psychic abilities when Psykos advocated humanity's extermination in their psychic research club. As an adult, Fubuki commands the Blizzard Group and holds B-Class Rank 1 in the Hero Association. She deliberately avoids A-Class promotion, believing elite heroes like Amai Mask and Atomic Samurai's disciples would obstruct her advancement. Her leadership blends ambition with loyalty to subordinates, though she initially recruits through intimidation, such as attacking Saitama to force him into her group. This confrontation resulted in minor injuries when Saitama deflected Genos' counterstrike. Fubuki wields telekinesis for object manipulation and restraints, barrier generation, flight, and telepathy. She temporarily enhances organic matter, healing allies' joint injuries. Signature techniques include the destructive tornado Hell Storm, the psychic-disrupting Psychic Whirlwind, and the knockout Psychic Strike. In combat, she evolves tactically—resisting Do-S's mind-control whip through willpower before obliterating her with Hell Storm during the Monster Association raid. She shielded allies Bang and Bomb from Overgrown Rover's energy blasts using barriers. Her character arc centers on relationships. A lifelong inferiority complex toward Tatsumaki strains their interactions, with Tatsumaki overshadowing Fubuki's abilities and dismissing her efforts. Fubuki gradually integrates into Saitama's circle, shifting from recruitment attempts to valuing its egalitarian dynamic. This challenges her power-centric self-view, though Saitama's "acquaintance" label underscores her lingering struggle to define bonds. Post-Monster Association arc, she trains for greater independence, vows revenge for her group's humiliation, and hones her psychic prowess.