Himiko Toga's family harshly rejected her natural inclinations tied to her Transform Quirk. As a child, her fascination with blood emerged when she presented a dead bird to horrified parents. They forced her into Quirk counseling to suppress these urges, demanding conformity to "normal" societal behavior. Throughout school, she masked her true self behind a cheerful, well-mannered facade to avoid rejection. This repression culminated in middle school when she attacked a bloodied classmate, Saito, drinking his blood with a straw, driven by what she felt was affection. Her family publicly disowned her, branding her a "demon," and she became a fugitive wanted for multiple blood-draining attacks. Inspired by Stain's ideology to dismantle hero society, she sought the League of Villains. Introduced to Tomura Shigaraki by Giran alongside Dabi, her enthusiastic declaration about killing Stain and making the world "easier to live in" nearly sparked violence. Despite Tomura's initial hostility, she joined the League. She participated in key operations like the Vanguard Action Squad's assault on the U.A. training camp, attacking Ochaco Uraraka and Tsuyu Asui. She expressed a twisted desire to befriend them while attempting to collect their blood and developed an obsessive fixation on Izuku Midoriya after seeing him injured, noting his resemblance to Saito. Toga's Transform Quirk allows her to assume the appearance and voice of anyone whose blood she consumes, with duration depending on the amount ingested. Initially limited to physical mimicry, her ability evolved during the Paranormal Liberation War arc, enabling her to access the Quirks of transformed individuals if she harbors genuine love for them. This awakening let her wield Ochaco's Zero Gravity and later Twice's Double. She typically fights with knives and uses specialized equipment like syringes and canisters to extract and store blood. Her relationships within the League shaped her development. She shared a close bond with Twice, comforting him after Magne's death and collaborating to sabotage the Shie Hassaikai. His death during the Paranormal Liberation War devastated her, triggering a vengeful rampage where she used his blood to unleash his Double Quirk. She respected Tomura Shigaraki's leadership and adopted his philosophy of destroying hated societal structures, though her inability to use his Quirk while transformed hinted at complex emotional boundaries. Her dynamic with Dabi involved mutual teasing and moments of solidarity, like when he burned down her abandoned family home to help her move forward. In the Final War arc, Toga fully embraced her villain identity. Gifted a vial of Twice's blood, she created an army of Twice clones to overwhelm heroes. However, she couldn't activate the Quirks of Dabi, Mr. Compress, or Shigaraki when transformed, suggesting emotional or psychological barriers despite her loyalty. Her confrontation with Ochaco revealed deep-seated resentment toward hero society; she rejected Ochaco's offer of understanding, highlighting how their Quirks dictated societal acceptance. She stabbed Ochaco, symbolizing twisted affection and irreversible rejection of redemption. She also confronted Izuku, demanding he accept her love and bloodsucking as "normal," but his refusal reinforced her isolation. Toga embodies themes of societal rejection and the struggle for self-acceptance. Suppressing her Quirk-related desires led to psychological fragmentation, intertwining expressions of "love" with violence. She viewed drinking blood as equivalent to kissing, a necessary act to become those she admired. Despite brief moments of kindness received while disguised as a normal high schooler, she concluded hero society could never accommodate her true nature. Her final actions, including creating a Twice clone to attack Hawks, underscored her commitment to her path, even as her physical form dissipated during the battle.