Her personality combines cruelty, pride, and vulgarity, frequently employing foul language and sadistic behavior. She challenges victims to races and cheats to win, such as through irregular counting. Despite this antagonism, she possesses a compassionate side, seeking out and comforting the spirits of young girls who died tragically. This duality motivated her fusion with the Earthbound Spirit Crab in Shono City's tunnel, aiming to console lingering spirits. Her vulgar propositions, like offering victims the chance to "suckle her teats" in exchange for their genitalia, mask a deeper protective instinct toward vulnerable individuals. Historically known as the "100 km/hr Granny," she terrorized Japan, cursing those who fled from her. She fused with the Earthbound Spirit Crab to amplify her powers, gaining dominion over Shono City. This fusion enabled her to manipulate the tunnel environment—summoning giant heads or restraining hands—and command spirits from nearby graveyards. Her confrontation with Momo Ayase and Ken Takakura began after Ken ran from her; she cursed him, stealing his testicles and partially possessing him. This curse allowed her to manifest through his body, utilizing her signature speed and spiritual abilities. Her core abilities center on supernatural speed, enabling movement up to 100 km/h, and spiritual powers including possession, curses, and teleportation via phone lines. Cursing victims involves stealing their genitalia and transforming their bodies into her likeness, with the curse spreading infectiously to bystanders. She can dematerialize into spirit form to possess targets or fuse with other entities. After being sealed in the maneki-neko doll, she gains uncontrollable luck-bestowing abilities, inadvertently aiding allies or enemies. She formerly wielded territory control in Shono City, altering environments and summoning spectral forces, but lost this after separation from the Earthbound Spirit Crab. Following her defeat by Momo and Seiko Ayase, she negotiates a deal to aid in recovering Ken's testicles in exchange for regaining her powers. Trapped in the doll, she evolves from antagonist to advisory ally, alerting the group to supernatural threats and training Ken to harness her speed. Though retaining her abrasive demeanor, she honors agreements and assists against spirits and aliens. Her backstory reveals her actions stem from a protective role for deceased girls, recontextualizing her aggression as misguided guardianship. This complexity positions her as a multifaceted entity.