The leader of the Tokyo Manji Gang, known by the alias "Invincible Mikey." He is the strongest delinquent, possessing both unmatched fighting prowess and overwhelming charisma. In his private life, he has a childish side—he pouts if his kid's meal doesn't have a flag in it and falls asleep the moment he gets full while out. His right-hand man, Ken Ryuguji (Draken), has his hands full acting as his caretaker. He is in a foul mood when he first wakes up.

His trademarks are his blonde braid and the dragon tattoo on his left temple. He boasts power matching his large frame and is strong enough to fight through a hundred rank-and-file enemies alone. He is one of the few people who can talk back to the often-reckless Mikey; while they clash frequently because of this, they usually reconcile without anyone noticing. While his nickname is "Draken," Mikey calls him "Ken-chin."

Manjiro Sano's (Mikey's) older brother by ten years. He was a reckless man who would fearlessly challenge those stronger than himself. Though he was a weak fighter and had no luck with women, he was someone to be relied upon in a crisis. His high charisma drew many delinquents to him.

The half-sister of Shinichiro and Manjiro Sano (Mikey). A blonde girl with a great figure and a mature aura. She is a typical Shibuya-style gal, often seen wearing white loose socks as her signature look. She has a bright, energetic personality and is a reliable person who handles all the housework for the all-male Sano household.

The leader of "Tenjiku," known by the alias "Invincible Izana." A beautiful youth with tan skin, white hair, and hanafuda-style earrings, his face almost always wears a defiant smirk. He is Emma Sano's brother and the half-brother of Shinichiro and Manjiro Sano.

The caretaker type and a valuable member who takes the lead in resolving internal Toman troubles. He is trusted by everyone as a big brother figure. He hand-makes the gang's uniforms. Despite being a delinquent, he serves as the president of the handicrafts club at his middle school and is adored by the members. He comes from a single-mother household and looks after his much younger sisters, Luna and Mana, in place of his mother who works late. His motto is "a delinquent who cherishes his family."

The person most admired by the First Division Vice-Captain, Chifuyu Matsuno. He has striking long black hair and thick eyebrows, and he ties his hair back in a ponytail when he fights. Although his character profile describes him as incredibly dim-witted for having been held back a grade during compulsory education, that only applies to academics; he is quick-witted when it counts.