Fumikage Tokoyami trains as a student at U.A. High School to become a Pro Hero, later achieving the rank of No. 17 Pro Hero. His appearance features a bird-like head with black hair, a yellow beak, and human teeth, transitioning to a human body from the shoulders down. He consistently wears a red choker around his neck, potentially as a tribute to an admired hero. His hero costume consists of a black robe appearing dark purple under light, knee-high black boots, and utilitarian clothing underneath: a dark t-shirt, wristbands, baggy pants, and a utility belt. Post-internship with Hawks, his physique becomes more muscular. Personality-wise, Tokoyami is reserved, serious, and focused, often ignoring frivolous questions. He demonstrates humility, acknowledging his limits and backing down when necessary. Valuing teamwork, he becomes more sociable in group settings and expresses gratitude to teammates. He harbors an affinity for darkness-themed concepts, describing himself as a "creature of the dark" and using archaic speech, though he feels insecure about these interests due to their perceived eccentricity. Protecting loved ones is a priority, leading him to risk his life saving mentor Hawks from Dabi during the Paranormal Liberation War. His Quirk, Dark Shadow, manifests a sentient shadow entity from his body, usable for offense, defense, mobility, and rescue. Its strength, size, and controllability fluctuate with light exposure: smaller, weaker, and manageable in brightness; larger, more powerful, but unruly in darkness. Dark Shadow's autonomy allows telepathic communication, acting as a partner. Negative emotions like anger or regret intensify its power and rebelliousness, sometimes causing loss of control, as seen when it harmed classmate Mezo Shoji during the Forest Training Arc. Tokoyami developed several Super Moves: "Black Ankh" envelops him in Dark Shadow like armor, mitigating physical weaknesses. "Black Fallen Angel," created under Hawks' guidance, uses Dark Shadow for aerial mobility. "Piercing Claw of the Dusk" projects Dark Shadow's claw at high speed, while "Ragnarök" is a high-impact technique used against foes like Re-Destro. During the Final War, he leveraged stormy darkness for "Total Release," a colossal Dark Shadow form that overwhelmed All For One. Throughout training, Tokoyami refined his abilities significantly. He earned fifth place in U.A.'s Quirk Apprehension Test and third in the Sports Festival, defeating recommended student Momo Yaoyorozu. His combat prowess impressed peers like Izuku Midoriya and mentors like All Might. Under Hawks, he improved Dark Shadow's range and close-range combat, though extended use drains energy faster. He participated in critical battles, including the assault on Gunga Mountain Villa and the Final War, aiding Hawks and Jiro against All For One. Notable physical traits include enhanced durability, evident when withstanding cave collapses and punches from empowered foes, and heightened reflexes, allowing him to counter agile adversaries like Slice. His tactical intellect emerged during events like the Human Cavalry Battle, directing Dark Shadow to guard blind spots and exploiting opponents' weaknesses like Shihai Kuroiro's Quirk limitations. Trivia includes his name's kanji: "Tokoyami" (常闇) translates to "eternal darkness," and "Fumikage" (踏陰) combines "step" (踏) and "shadow" (陰), alluding to "stepping through shadows." His preferred attire under the robe resembles punk or tactical clothing, and he avoids utensils like forks, favoring chopsticks due to his beak. He maintains neutral or cooperative relationships with classmates, showing particular respect for Izuku Midoriya and Shoji while training alongside Tsuyu Asui and Ectoplasm.