Sekijiro Kan operates professionally as the Blood Hero Vlad King, fulfilling dual roles as a pro hero and homeroom teacher for U.A. High School's Class 1-B. He possesses a tall, broad, muscular build at 194 cm, featuring lightly tanned skin, short spiky pale gray hair, and distinct scars including an X-shaped mark on his left cheek. Prominent lower canine teeth remain visible even when his mouth is closed. His hero costume comprises a dark red skin-tight suit with a low U-shaped collar, black trim, white over-the-knee boots, thick arm braces, red gloves, and a metallic belt, completed by an orange eye mask. A specialized gauntlet allows blood ejection and reabsorption for his Quirk. Born November 10th of mixed Japanese and Turkish heritage, Sekijiro speaks both Japanese and Turkish fluently, alongside basic English and Chinese. His family includes his mother, Ayperi Kan, and his late father, Chisuke Kan; he also owns a dog named Tazi. During his own U.A. student days, he cultivated a rivalry with Shota Aizawa, Hizashi Yamada, and Oboro Shirakumo, especially during school festivals. His Blood Control Quirk's initially unheroic perception resulted in zero sponsorships despite reaching the Sports Festival's top 16, motivating him to develop better control equipment and improve his public image. A post-graduation villain attack caused over 40 casualties and 13 deaths, including his interning pro hero, leading to a PTSD diagnosis at age 24 and the acquisition of a service dog. He later joined U.A. as an administrator before transitioning to teaching, forming a close friendship with counselor Ryo Inui (Hound Dog). Sekijiro was involved in the arrest of Goto Imasuji, resulting in a complex arrangement where Imasuji resided under his supervision. This ended violently when Imasuji, following a disagreement, went on a rampage causing the deaths of the Waterhose duo. Sekijiro exhibits a caring yet competitive personality, encouraging his Class 1-B students to excel by using Class 1-A as rivals. He is protective of students and colleagues, expressing regret over All Might's retirement and concern for Aizawa during media interactions. Demonstrating quick thinking in crises, he shielded students from a Dabi clone during the Forest Training Camp invasion, immobilizing it with his Quirk. He was also among the few privy to All Might's true form before its public revelation. His Quirk, Blood Control (Sōketsu), enables external manipulation and solidification of his own blood to trap opponents or create barriers. He exhibits enhanced durability against blood loss levels fatal to ordinary humans. Officially rated highly in power, speed, and technique (4/5–5/6), with moderate intelligence and cooperativeness (3/5–3/6), his above-average strength and speed allow him to lift and pin adversaries single-handedly and react swiftly to threats. Key appearances include aiding student defense during the U.S.J. incident, combating Dabi's clone and assisting evacuations at the Forest Training Camp, displaying comical bias toward Class 1-B during the Joint Training Battle, and participating in combat during the Paranormal Liberation War. His name incorporates the kanji for "vessel," "red," and "love," while his hero alias and abilities reference Vlad the Impaler and Dracula lore.