Height: 182 cm Weight: 74 kg Chest: 93 cm Blood Type: B Birthday: December 14th Likes: Four Dark Devas of Destruction Dislikes: The mundane world Former High School: Fazaal Commercial High School Notes: Ultimate Breeder He often speaks in a chuunibyou-like manner, but as the "Ultimate Breeder," he pours maximum affection into animals. He knows the responsibility of keeping animals, the preciousness of life, and the importance of living better than anyone. Because of this, while he dislikes the existence of animals like livestock born only to be eaten by humans, he grieves over the fact that he cannot change that reality alone. He is also surprisingly prone to loneliness. The four hamsters he always carries with him are the Four Dark Devas of Destruction. He is dating Fuyuhiko and Kazuichi.

Height: 157 cm Weight: 43 kg Chest: 73 cm Blood Type: AB Birthday: August 16th Likes: Karinto Dislikes: Milk Former High School: Suzuran High School Notes: Ultimate Yakuza He generally tries to act alone. He dislikes being spoken to and tries to drive others away. However, he treats those he recognizes as allies appropriately, and occasionally shows a side he doesn't normally reveal, such as making small jokes or laughing heartily at a lively conversation. Because he is aggressive, he often ends up in arguments when one-on-one. Calling him "baby-faced" is an absolute taboo. He’s dating Gundham and Kazuichi.

Height: 172 cm Weight: 64 kg Chest: 86 cm Blood Type: A Birthday: June 29th Likes: Cola Dislikes: Sugar-free drinks Former High School: Karashima Technical High School Notes: Ultimate Mechanic As the "Ultimate Mechanic," he loves engines, but he suffers from severe motion sickness—to the point of getting sick on a motorcycle. Consequently, he basically doesn't ride the machines he modifies. Roller coasters are absolutely impossible (though he'd go if Sonia invited him). He has a one-sided crush on Sonia Nevermind, using polite speech and excessively praising her. However, Sonia does not see Kazuichi as a man and is instead interested in Gundham Tanaka; because of this, Kazuichi views Gundham as a one-sided rival. In contrast to his flashy appearance and carefree personality, he is quite a coward, screaming or becoming overly cautious just by being spoken to. He’s dating Fuyuhiko and Gundham.