Alan Ojiro, a third-year at Inarizaki High, steps up as court captain when Shinsuke Kita is absent and wears jersey number 4. He holds the prestigious title of one of Japan's top five high school aces, capable of rivaling the top three at his best. Standing 184.7 cm tall with a muscular build in high school, he grows to 186.6 cm post-graduation. His appearance features dark-brown hair, thick eyebrows, and almond-shaped eyes with distinct foxlike pupils—gold/brown in the manga, greyish green in the anime. Post-timeskip, he gains slight height and sports a short goatee. Ojiro blends maturity with sharp wit, often acting as the "straight man" (tsukkomi) to counter the antics of teammates like the Miya twins, delivering quick comebacks to nonsense. Off the court, he relaxes into a laid-back, humorous demeanor, enjoying casual jokes or rock-paper-scissors challenges with teammates. During matches, however, his intensity can surge, sometimes leading to rushed plays or overly powerful spikes. He firmly believes emotions like happiness need no logical justification, a view he shares with Kita to ease the captain's self-doubts. His background includes a long-standing connection with the Miya twins, Osamu and Atsumu, dating back to elementary school. Their meeting at a fifth-grade volleyball workshop sparked the twins' admiration for his foreign-sounding name (implied as "Alan"), leading them to adopt the nicknames "Samu" and "Tsumu." Ojiro observed their competitive dynamic, noting Atsumu's fierce volleyball drive. Cultural hints, like owning American-flag underwear or speaking Korean with his sister, suggest possible mixed American-Japanese or Korean-Japanese heritage, though official media offers no explicit confirmation. At the Tokyo Nationals, Ojiro serves as Inarizaki's primary scorer against Karasuno, unleashing spikes powerful enough to pierce triple blocks and landing no-touch service aces. Karasuno strategically targets him with float serves to exhaust him. He develops a brief rivalry with Karasuno's ace, Asahi Azumane, and struggles to maintain composure when opponents provoke his emotional reactions. Despite his efforts, Inarizaki loses, and Kita's final speech visibly moves him. Post-timeskip, Ojiro joins the Tachibana Red Falcons in V.League Division 1 as an outside hitter, becoming the team's promotional face and eventually representing Japan in the 2021 Olympics. Professionally, he misses the Miya twins' humor, finding his new teammates less receptive to his puns and banter. His high school stats reflect his balanced playstyle: Power 5/5, Jumping 4/5, Stamina 4/5, Spikes 10/10, Blocks 8/10, embodying his belief that "an ace must excel at both offense and defense." Weaknesses include occasional impulsivity and difficulty handling float serves. Key relationships center on his childhood bond with the Miya twins, whom he frequently chastises yet deeply respects, and his supportive friendship with Kita. Trivia notes his April 4 birthday (Aries), favorite food (Ritz crackers), and self-deprecating humor about unintentionally wearing hole-ridden pants or socks.