Itsuka Kendo, known professionally as the hero Battle Fist, studies in Class 1-B at U.A. High School. Born on September 9 in Chiba Prefecture with blood type O, she possesses sharp teal eyes with white pupils and long orange hair. Her signature hairstyle features a high ponytail on her head's left side, bangs split into three clumps framing her eyes, and tufts sticking up at the top. She stands 166 cm tall. Her hero costume combines a teal knee-length qipao with yellow accents, a black double-breasted corset ending below her breasts, black short pants, a brown utility belt, a thin black domino mask, and white-heeled navy blue boots; a winter variant adds long sleeves. Eight years after the Final War, she appears more muscular with a neater, slightly curled ponytail and holds the rank of No. 23 Pro Hero. Spirited, thoughtful, and assertive, Itsuka serves as Class 1-B's president and acts as the unifying "big sister," often intervening to curb problematic behavior like Neito Monoma's antagonism toward Class 1-A. Demonstrating fairness, she relinquished her spot in the U.A. Sports Festival tournament to classmates she considered more deserving. Her leadership extends to strategic combat planning, though she sometimes prioritizes personal challenges over optimal tactics, as seen in the Joint Training Battle. She holds no ill will toward Class 1-A, offering them rule-bending assistance when needed and expressing concern for their well-being. Her favorite things are black coffee and motorcycles, while she dislikes superficial comparisons based on appearance, particularly resentful of parallels drawn to Momo Yaoyorozu. Her Quirk, Big Fist, allows her to swell her hands to gigantic proportions, granting immense striking power, gripping strength, and wind generation. This ability lets her shatter defenses like tungsten shields, carry or restrain multiple people, and create protective barriers against airborne hazards. Notable techniques include "Double Jumbo Fist," activating her Quirk precisely at impact for maximized damage, and using enlarged hands to disperse gases or generate defensive gusts. She possesses significant physical strength even without her Quirk, winning an arm-wrestling match against Eijiro Kirishima. Itsuka excels in hand-to-hand combat, ranking fifth in the U.A. Entrance Exam with 65 points (25 villain points, 40 rescue points). Her analytical skills shine when deducing enemy Quirk mechanics, such as locating Mustard by tracking gas-movement patterns. During the U.A. Sports Festival, she participated in the obstacle race and cavalry battle but did not advance to the tournament. At the forest training camp, she collaborated with Tetsutetsu Tetsutetsu to defeat the villain Mustard by dispersing his gas and pinpointing his location. Scouted for her hero internship by pro hero Uwabami alongside Momo Yaoyorozu due to their looks, she appeared in a television commercial and later voiced frustration about the superficial grouping. In the Joint Training Battle against Class 1-A, she led her team to victory using a multi-layered strategy involving Shihai Kuroiro's control of Dark Shadow and isolating Momo for one-on-one combat, though she prioritized personal rivalry over tactical efficiency. During the Final War, she assisted in civilian evacuations at U.A. Itsuka Kendo ranks 13th in the first popularity poll—the highest in Class 1-B. Her Quirk has drawn comparisons to Marvel characters like Mr. Fantastic and Kamala Khan, though its direct inspiration remains unconfirmed.