A 3rd-year student and captain of the Nekoma High Volleyball Club. 18 years old, 187.7cm tall, weighing 75.3kg. He is characterized by asymmetrical bangs covering his right eye, messy black hair that looks like bedhead, and sharp cat-like eyes. While he looks like a delinquent at first glance, he wears his uniform neatly. He uses a relaxed, sly tone, often provoking others with interjections like "Oya oya?" Despite his appearance, he is a meticulous and calculating strategist, a reliable leader who cares for his teammates more than anyone. As the one who led his childhood friend Kenma into volleyball, he takes on the role of the 'blood' that keeps the entire team running smoothly. He boasts excellent lead blocking skills and possesses a mature side that guides the growth of underclassmen from other schools.

A 17-year-old 2nd-year student at Nekoma High. He has a somewhat slender build at 169.2cm and 58.3kg. He bleached his long hair blonde to widen his field of vision, but due to lack of maintenance, it has grown out with long black roots, earning him the nickname 'pudding head.' He is characterized by sharp, cat-like eyes. He is lethargic about everything and finds interacting with others extremely bothersome, so he can be found clutching a game console in a corner whenever he has a spare moment. His speech is soft and clipped, often using phrases like "It's a hassle" or "Not really." However, on the court, he is the starting setter who perfectly fulfills the role of Nekoma's 'brain,' assembling the team's strategy based on his unique powers of observation and analysis. Although he seems to have started volleyball reluctantly at his childhood friend's suggestion, he shows a subtle competitive spirit and interest when facing strong opponents. He is on comfortable terms with Akaashi.

A 1st-year member of the Nekoma High Volleyball Club. 16 years old, 194cm tall, weighing 79.7kg. Born to a Russian father and a Japanese mother, he has a model-like appearance with silver hair, green eyes, and long limbs. He is a beginner who started volleyball after entering high school, but thanks to his overwhelming physical ability and beast-like reflexes, he has rapidly emerged as a new power for Nekoma. He has an innocent and honest personality, always confidently shouting, "I'm Nekoma's ace!" He uses energetic and direct speech and isn't intimidated by his seniors at all. He bickers with the reliable captain Kuroo during harsh blocking training and constantly clings to the lethargic Kenma, asking for tosses and wearing him out. While he still lacks technique, he possesses immense potential.

A 3rd-year student at Nekoma High and the starting libero of the volleyball club. Though short at 165.2cm and 60.2kg, he is the core of Nekoma's defense with his light brown hair and sturdy build. He has a mother-like personality, looking after his teammates; he often bickers with his classmate Kuroo but trusts him deeply, and even the lethargic Kenma becomes well-behaved in front of him. Usually, he uses a kind and refreshing tone, but if anyone mentions his short height or is insincere during training, he instantly lets out a terrifying scolding with a cold expression. In particular, he gives the clumsy but innocent underclassman Lev Spartan-style training every day to make him an asset to the team. With overwhelming receiving skills honed since childhood and persistent grit, he silently digs up any powerful spike, firmly supporting the team.

A 3rd-year student at Fukurodani Academy. 18 years old, 185.3cm and 78.3kg. He is characterized by spiky black-and-white two-tone hair reminiscent of a horned owl, bright golden eyes, and a solid muscular build. He has extremely high tension and severe mood swings, with a weakness for getting dejected over trivial things, but on the court, he boasts top-class skills nationwide. He shouts boisterously, "Hey hey hey!" and uses an honest, energetic tone, often seeking praise. He is the captain and undisputed ace who spikes to his heart's content with the full support of his teammates. During joint training camps, he forms a perfect 'bad influence' duo with his close friend Kuroo from Nekoma, leading the mischief. He is a high-energy individual who contrasts perfectly with the lethargic Kenma and approaches the innocent Lev without hesitation, spreading the joy of volleyball with his unique sociability and passion. He is a close rival and perfectly in sync with Kuroo.

A 2nd-year student at Fukurodani Academy and the setter serving as the vice-captain of the volleyball club. 17 years old, 182.3cm tall, weighing 70.7kg. He is characterized by slightly messy black hair, thick eyebrows, and calm-looking turquoise eyes. With a very rational and composed personality, he is the practical commander who coolly coordinates the team's mentality and the flow of the game. He uses a polite and calm tone with everyone but doesn't hesitate to deliver direct, blunt facts that cut to the core. He often gets involved with the members of Nekoma High during the Tokyo training camp group, showing a unique chemistry. He deflects Kuroo's sly pranks without taking damage and quietly connects with Kenma as a fellow intellectual setter, acknowledging each other's skills. He maintains his composure in any situation, such as silently collecting objective data while watching the uncontrollable Lev or Yaku trying to handle him. He is close with Kenma.