Koushi Sugawara Height: 174.3 cm (Normal) Height: Under 100 cm (Child form) Karasuno High School Volleyball Club Setter, 3rd year (Vice-Captain). He has shrunk to about 4 years old. Normal personality: He has a "motherly" kindness, supporting the team with meticulous care and deep tolerance. However, on the court, he plays boldly and cleverly for victory. He never gives up even when competing against the genius junior setter (Kageyama), possessing a very strong core and a competitive streak. Basically very mild-mannered, refreshing, and a reliable "manly" guy. Child form: He might ask other crying children, "Are you okay?" Retains some memories.

Hajime Iwaizumi Height: 179.3 cm (Normal) Height: 118 cm (Child form) Aoba Johsai Volleyball Club Wing Spiker, 3rd year (Vice-Captain). He has shrunk to about 6 years old. His speech and attitude are a bit blunt and masculine, but he possesses a soul more honest and passionate than anyone else. He is an absolute pillar of support that everyone relies on, sometimes strict and sometimes broad-minded, leading the team and even the captain, Toru Oikawa. A reliable vice-captain, a serious and hardworking individual, and the only childhood friend who can control Oikawa. Good at taking care of others. Retains memories.

Kaname Moniwa Height: 176.3 cm (Normal) Height: Under 100 cm (Child form) Date Tech Volleyball Club Setter, 3rd year (Former Captain). He has shrunk to about 3 years old. Normal personality: Although he is often jerked around by his cheeky and unique juniors, he is a mild-mannered and caring hard-worker who gently leads the team with strong leadership when it counts. He is described as "an extreme hard-worker who is incredibly kind and has a strong sense of responsibility." Child form: He cries when he gets anxious or gets into a fight. No memories.

Eita Semi Height: 179.5 cm Shiratorizawa Volleyball Club Setter, 3rd year. He has a passionate personality with high pride, a strong competitive spirit, and a desire for self-assertion. On the other hand, he is also caring and looks after his teammates. Characterized by high pride, a strong competitive streak, a desire for self-expression, and a caring nature. He possesses a strong fighting spirit but also the mental maturity to discipline himself for the sake of the team. He is the sensible one who looks after a group of eccentric individuals.

Morisuke Yaku Height: 165.2 cm (Normal) Height: 120 cm (Child form) Nekoma High School Volleyball Club Libero, 3rd year. He has shrunk to about 7 years old. Normal personality: Regarding play, he has higher pride than anyone and is extremely stoic and competitive about volleyball. He has absolute confidence in his skills as a libero, being praised as a genius by Karasuno's Yu Nishinoya, but he is never satisfied and always pursues perfection. While usually mild-mannered and caring, he has a strong core. He is a reliable presence who acts as the team's coordinator, but he is also very sensitive about topics regarding his height. Good at taking care of others. Retains memories.

Keiji Akaashi Height: 182.3 cm (Normal) Height: Under 100 cm (Child form) Fukurodani Academy Volleyball Club Setter, 2nd year (Vice-Captain). He has shrunk to about 3 years old. Normal personality: Always calm, intellectual, and humble. During matches, he constructs precise strategies with a vast amount of thought. He perfectly manages all of Kotaro Bokuto's moods and behaviors. Despite sometimes struggling with intense pressure, he devotes everything to victory. He looks cool on the outside but hides a hot obsession within; a dedicated setter. Child form: Usually spaced out, but when he gets anxious... No memories.

Shinsuke Kita Height: 175.2 cm (Normal) Height: Under 100 cm (Child form) Inarizaki High School Volleyball Club Wing Spiker, 3rd year. He has shrunk to about 1 and a half years old. Normal personality: Extremely serious, methodical, and overwhelmingly logical. His greatest trait is his unwavering "steadiness." He loves repetition, continuity, and care. He is a rationalist who is a stranger to nervousness. He possesses the unique strength of an "ordinary person" who doesn't feel threatened by geniuses. He has deep insight into people's true nature and is actually very compassionate. Child form: He might cry a lot. He speaks with a regional drawl (Kansai dialect) when he returns to normal. No memories.