Tamaki Kotatsu, a 17-year-old Third Generation pyrokinetic, serves in Special Fire Force Company 8 after a previous assignment with Company 1. Born February 22nd, she stands 156 cm tall and weighs 41 kg. Her appearance features long dark hair often in twintails, golden eyes with distinctive white pupils, and a slender, curvy figure. Her standard combat gear includes dark undergarments, a protective jacket fastened with cross-shaped buttons, a neck protector, gloves, and boots accented in blue, typically exposing her midriff. While with Company 1, she wore modest dresses layered with other garments; Company 8 introduced orange jumpsuits. Activating her Ignition Ability manifests pink flames forming cat ears, two forked tails, and claws.
Clumsiness led to social ostracization and bullying during her school years. Following a friend becoming a nun, Tamaki sought sisterhood within the Holy Sol Temple. Witnessing her spontaneous pyrokinetic manifestation during a fall prompted schoolmates to suggest fire soldier recruitment. A visit to Company 1's cathedral solidified this path after encountering the seemingly warm and charismatic Rekka Hoshimiya, who inspired her career choice.
Her personality blends a friendly, protective nature toward comrades and children with boastfulness, loudness, and quick irritation when superiors are disrespected. Chronic clumsiness manifests as the "Lucky Lecher Lure" – recurring accidental intimate encounters causing significant embarrassment, which she blames on external forces. Deep-seated insecurities stem from feeling less conviction than peers and lacking profound motivation for joining the Fire Force beyond social conformity. Despite self-doubt, she displays courage and justice, exemplified by defiantly slapping Rekka upon discovering his human experimentation and enduring his violent retaliation to protect innocents. Tsundere tendencies surface in interactions with Shinra Kusakabe, such as offering her phone number before retracting it after his stated reason.
Her primary ability, "Nekomata," generates pink flames granting feline attributes and enhanced agility, enabling quadrupedal movement and rooftop traversal. Forked fire tails propel movement, create concussive blasts capable of breaching walls, restrain targets within fiery circles, or act as distress signals. Training with Benimaru Shinmon unlocked suppressed capabilities: full-body flaming armor resembling a humanoid cat, transparent flame constructs shaped like fangs, and dramatically improved flexibility for destroying large fire constructs. Additional traits include heat resistance, enhanced speed rivaling Company 7 members and Shinra, and notable physical durability recognized by opponents like Orochi, allowing survival of assaults from Rekka, Infernals, and Assault.
Her plot involvement began with participation in the Rookie Fire Soldier Games, encountering Shinra and Arthur Boyle during a confrontation with Joker. Transfer to Company 8 followed traumatic events involving Rekka Hoshimiya: after insisting on witnessing a protective prayer ritual, she observed him forcibly transforming a civilian into an Infernal. Confronting him led to a violent beating, during which she deployed Nekomata tails as a distress signal, attracting Shinra's intervention. Post-incident suspension from Company 1 resulted in disciplinary assignment to Company 8.
Within Company 8, the Lucky Lecher Lure caused operational complications, though occasionally yielded unintended advantages – notably defeating Assault multiple times through accidental interference. Training with Hinata and Hikage in Asakusa improved her speed during tag exercises. Nun duties included substituting for Iris in prayer services and conducting Infernal rites. She participated in critical missions: the Netherworld infiltration (protecting Iris from Assault), the Chinese Peninsula research expedition investigating Adolla Burst, and Asakusa reconstruction efforts. Following Juggernaut's severe injury during a rescue operation, self-reflection on repeated reliance on others and Shinra's encouragement solidified her resolve for substantive improvement. Ongoing training focuses on combat effectiveness and overcoming self-perceived inadequacies.