Fumikage Tokoyami possesses a distinctive crow or raven-like head with a tan hooked beak and thin red eyes on either side, contrasting with his fair-skinned human body. His features evolved from softer childhood forms to more angular ones in adolescence. He consistently wears a red choker. Intensive training with Pro Hero Hawks developed a more muscular physique, and he bears a scar on his left foot from Dabi's flames during the Paranormal Liberation War. Post-Final War, his appearance features ruffled, feathery hair with gray tints, wrist chains, and rings. His hero costume is a dark robe appearing purple in light, worn over knee-high boots, a dark shirt, wristbands, baggy pants, and a utility belt.
Tokoyami exhibits a reserved, serious, and focused personality, often dismissing requests he considers trivial. During team operations, he becomes more sociable and supportive, expressing trust in allies and gratitude. He identifies as a "creature of the dark," using dramatic, archaic language and embracing gloomy aesthetics, though he feels insecure about others perceiving these interests as odd. He demonstrates humility by acknowledging his limits and heeding advice, showing determination to match top heroes like Hawks. Largely unconcerned with fame, he reacts pridefully if underestimated. Protective of friends and mentors, intense emotions like rage can trigger loss of control over his Quirk. Early timidity gave way to confidence and bravery, exemplified by risking his life to save Hawks from Dabi.
His Quirk, Dark Shadow, manifests as a sentient shadow entity usable for offense, defense, mobility, and rescue. Its strength, size, and controllability fluctuate with environmental light: bright light weakens and shrinks it but enhances control, while darkness amplifies its power at the cost of volatility. Tokoyami's negative emotions further intensify and destabilize Dark Shadow. Continuous training refined his abilities, including extended projection range and techniques like Black Fallen Angel for aerial mobility. Key Ultimate Moves are Black Abyss (close combat enhancement by enveloping himself), Ragnarök (large-scale offensive surge), and Light of Baldur (concentrated energy blast). During the Final War, he achieved "Total Release," creating a colossal Dark Shadow form under stormy skies. Tokoyami also possesses enhanced durability and heightened reflexes.
His combat prowess ranks among Class 1-A's strongest, evidenced by top placements in the U.A. Entrance Exam (9th), Quirk Apprehension Test (5th), and Sports Festival (3rd). He defeated recommended student Momo Yaoyorozu during the Sports Festival tournament and temporarily held off Katsuki Bakugo despite a Quirk disadvantage. His capabilities drew praise from All Might and Hawks, who selected him for an internship. Training focused on mitigating close-combat vulnerability through physical conditioning and enhancing Dark Shadow's stability in darkness via cave meditation. During the Paranormal Liberation War, he repelled Re-Destro and rescued Hawks from Dabi. In the Final War, he played a critical role against All For One, destroying his helmet and briefly overwhelming him with Total Release, impressing the villain enough to target his Quirk for theft. Eight years post-war, he graduated U.A., became a Pro Hero, and ranked 17th nationally.
Tokoyami maintains a significant mentorship under Hawks, who guided his physical and Quirk development, fostering deep loyalty; Tokoyami risked his life against Dabi to protect him. Within Class 1-A, he has respectful ties: he strategized effectively with Izuku Midoriya, received aid from Katsuki Bakugo and Shoto Todoroki to regain control of Dark Shadow, and apologized to Mezo Shoji after accidentally injuring him. He teams efficiently with Tsuyu Asui, showcasing mutual trust during combat exams. Dark Shadow is acknowledged as his closest companion.