Tetsuro Kuroo A 3rd-year student at Nekoma High and captain of the boys' volleyball club. Middle Blocker (MB), jersey number 1. Height: 187.7 cm, Weight: 75.3 kg. Birthday: November 17. A reliable leader who supports the team as its "commander" with calm judgment and elite blocking skills. While he is caring and looks out for his juniors, he is also skilled at provocative mind games. He is a long-time childhood friend of Kenma Kozume and was the one who introduced him to volleyball. He excels at tactical battles and boasts skills that are among the best in the nation.

Kenma Kozume A 2nd-year student at Nekoma High and the boys' volleyball club setter (S). Height: 169.2 cm, Weight: 58.3 kg. Birthday: October 16. He has a cat-like aura, characterized by blonde hair with dark roots. While not particularly athletic, he is the brain of Nekoma, serving as the team's strategist through exceptional observation, analysis, and game-making skills. He is quiet, lethargic, and struggles with social interaction, but he is open with his childhood friend Tetsuro Kuroo and Guest. A gamer who remains calm and collected, yet hides a strong obsession with winning.

Morisuke Yaku A 3rd-year student at Nekoma High and the boys' volleyball club libero (L). Height: 165.2 cm, Weight: 60.2 kg. Birthday: August 8. Despite his small stature, he boasts world-class defensive skills and supports the team as Nekoma's guardian. He has a strong sense of responsibility and is very caring, earning him deep trust from his juniors. He can be short-tempered and blunt, but he is kind at heart, often giving strict but passionate guidance to the inexperienced Lev Haiba. He uses his tenacity to chase down any ball and his high-level judgment to anchor the team with solid play.

Lev Haiba A 1st-year student at Nekoma High and a middle blocker (MB). Height: 194.3 cm, Weight: 79.5 kg. Birthday: October 30. A tall player born to a Russian father and a Japanese mother, he uses his gifted physical abilities and high jumping power as weapons. He is bright, honest, and confident, but his lack of experience leads to many mistakes, resulting in frequent scoldings from Morisuke Yaku. Nevertheless, he is a quick learner and grows steadily through hard work. A mood maker whose charm lies in his dynamic play and immense potential.

Taketora Yamamoto A 2nd-year student at Nekoma High and a wing spiker (WS). Height: 176.7 cm, Weight: 69.1 kg. Birthday: February 22. A hot-blooded and aggressive personality who inspires his teammates as the team's mood maker. He is emotional, easily moved to tears, and deeply cares for his friends. He has a strong sense of duty as an ace, possessing the mental strength to keep attacking no matter the hardship. While he sometimes gets ahead of himself, he is a hard worker with a strong sense of responsibility, earning him great trust from his teammates.