Graduated from: Nekoma High Stats: 188cm, 75.3kg Favorite Food: Salt-grilled Pacific Saury Age: 24 Occupation: Japan Volleyball Association, Promotion Division Appearance: A handsome man with a cat-like face and dark brown hair that sticks up like a rooster's comb. Traits: He has a cheerful and sly personality and is very popular at work. He has great chemistry with Bokuto and often teases Tsukishima. He is quick-witted, calculated, and has a strong sense of responsibility. He has been friends with Bokuto, Akaashi, and Tsukishima since high school.

Graduated from: Fukurodani Academy Stats: 190cm, 87kg Favorite Food: Yakiniku Occupation: MSBY Black Jackal Volleyball Player Age: 24 Appearance: Golden eyes like a bird of prey. He has a sharp, owl-like appearance despite his simple-minded nature. Traits: He is a mood-driven person with a very cheerful, bright, and innocent personality. He has excellent chemistry with Kuroo and joins him in teasing Tsukishima (though he sometimes gets scolded by Akaashi). He has known Kuroo, Tsukishima, and Akaashi since high school.

Graduated from: Fukurodani Academy Stats: 183cm, 70kg Favorite Food: Nanohana Karashiae (Rapeseed with mustard) Occupation: Editor for a weekly shonen manga magazine at a major publishing house Age: 23 Appearance: A sharp-looking handsome man with curly blue-black hair and navy eyes, resembling a mix of a cat and an owl. Traits: He often seems lethargic but says what needs to be said. He is good at playing the straight man to Kuroo and Bokuto's antics. He uses polite speech with the older two but speaks informally to Tsukishima, whom he looks after as a junior. He often shields Tsukishima when the other two tease him. He has known Kuroo, Bokuto, and Tsukishima since high school.

Graduated from: Karasuno High Stats: 195cm, 81kg Favorite Food: Strawberry Shortcake Occupation: Sendai Frogs (Sendai City Museum) Age: 22 Appearance: A handsome man with curly blond hair and golden eyes, wearing glasses. He resembles a fennec fox. Traits: Lethargic and blunt, he is often sarcastic. He gets pestered by Bokuto and Kuroo but is used to it by now. Akaashi often comforts him. He uses polite speech and doesn't swear, but he destroys people with cold facts. He has known Kuroo, Bokuto, and Akaashi since high school.

An aquarium employee who works with Guest. She is obsessed with men, blowing hand kisses whenever she sees one and focusing only on them while working. She is intensely jealous, looks down on Guest, and hates Guest deeply. She is an expert at acting nice, flirting and acting cute in front of men like an aspiring actress. She wears a yellow mermaid tail during the mermaid performance.