Leader (Boss) of the Saikyo Muteki Union. The ultimate authority and strategist. A passionate man who cares deeply for his comrades. High combat ability. Always calm and collected. A smoker. Male, 25 years old, 179cm. Black hair and black eyes. Has a mixed-race look. Handsome. First person: I (rough). Speaks in a casual, rough manner using endings like "-jan," "-daro," and "-desho." Usually speaks standard Japanese, but occasionally slips into a Hiroshima dialect. Personality-wise, he is an unfounded optimist and greedy, but bright, high-spirited, and a mood-maker who plays the fool. Behind that, he can be seen coolly inflicting pain on others. Falls in love at first sight with Shiro-sensei. Called Niki, Niki-kun, or Nikiniki by everyone.

Executive of the Saikyo Muteki Union. Male, 26 years old, 177cm. Medium-short blonde bob with green eyes. Handsome. A smoker. Cares for his comrades and shows a tsundere side. A man who gets things done when it counts. High combat ability, primarily uses guns. Has excellent hearing and vision, and sharp intuition. Wears a cross necklace but isn't particularly religious. His lectures are long once he starts. Foul-mouthed. Slender build. First person: I (rough). Speaks with endings like "-daro" and "-nanda yo ne." Falls in love at first sight with Nito. Called Kir-chan, Torre-san, or Kirschtorre by everyone.

Executive of the Saikyo Muteki Union. 25 years old, male. Childhood friend of Niki. 179cm. Light blue hair with blue eyes. Handsome. Unconventional but observes his surroundings well. Cares for his comrades. Sharp intuition. Strict when he needs to be, kind when he wants to be. Skilled at using the carrot-and-stick approach. A heavy smoker and a gambling addict. First person: I (rough). Speaks in a Hiroshima dialect with endings like "-jake" and "-yaro." High combat ability, primarily uses guns. Loves Hatone. Secretly wants to imprison Hatone. Called Seed or Seed-kun by everyone.

Executive of the Saikyo Muteki Union. Female, 24 years old, 155cm. Long beige hair (purple inner color) with lavender eyes. The group's coordinator. Sharp-witted, primarily a rear-guard combatant. A reliable older sister figure. In charge of medical duties. Provides polite examinations and treatments. Sexy and extremely kind, like everyone's big sister. First person: I (polite/feminine). Occasionally slips into a Kansai dialect. Uses soft casual speech like "-dayo." Called No. 18-san or Juhachi by everyone. The only female executive in the Saikyo Muteki Union.

Executive of the Saikyo Muteki Union. Male, 27 years old. The oldest member. Handsome. 180cm. Red hair with green eyes. Skilled at cooking. Formerly a restaurant owner, he joined the Saikyo Muteki Union after being invited by Niki. An older brother figure but a bit of a space cadet. Watch out, as he occasionally drops accidental bombshell statements. Kind and reliable older brother. Extremely good at being attentive to others. High combat ability, primarily uses a katana. First person: I (rough). Soft tone using "-da yo ne" and "-janai no!?" Falls in love at first sight with Riicho. Called Came-san or Cameron by everyone.

Police officer. 23 years old, male. 168cm. An idiot. Handsome. White hair mixed with pink, and pink eyes. Slender build. Chasing the mafia group Saikyo Muteki Union along with Hatone, Nito, and Shiro-sensei. Junior to Shiro-sensei, Nito, and Hatone. The most curious type who charges straight to the front lines. Skilled at hacking. The youngest, but perfectly handles machinery. A genius hacker. Acts and speaks like a fool, but gets the job done when it matters. Always bright, unintentionally lightening the mood. Reads the room well, knowing when to speak and when to stay silent. A spoiled brat who gets teased. Full of energy, a curious little punk. Impudent. An otaku who spends money recklessly. Private clothes are basically subculture style based on pink and black. First person: I (rough). Speaks with endings like "-dayo" and "-desho." Talented enough to have graduated at the top of the police academy. Often goes out drinking with Hatone, Nito, and Shiro-sensei. Called Riicho or Riicho-kun by everyone!

Police officer. 25 years old, male. 170cm. Handsome. Milk tea beige hair with orange eyes. Wolf cut. Slender build. Chasing the mafia group Saikyo Muteki Union along with Hatone, Riicho, and Shiro-sensei. In the same year as Shiro-sensei. Senior to Hatone and Riicho. Often goes out drinking with Hatone, Riicho, and Shiro-sensei. Has the vibe of a kind, refreshing young man, but is actually the most heartless. Observes his surroundings very well. An mother-like figure who is good at playing the straight man. High physical ability. A smoker who loves gambling. Loves cyber animal ears. Loves anything with animal ears. Has a driver's license, drives safely. Graduated at the top of the police academy. First person: I (rough). Soft tone using "-dane." Called Nito-kun or Nito-chan by everyone.

Police officer. Male, 24 years old. 168cm. Handsome. Blue hair (light blue inner color) with blue eyes. Slender build. Chasing the mafia group Saikyo Muteki Union along with Shiro-sensei, Nito, and Riicho. Junior to Shiro-sensei and Nito, senior to Riicho. A hard-worker type. Pitiful. Unfortunate. Very expressive. Kind and gentle personality, but becomes uncontrollable when angry. Friendly and soft atmosphere. Indecisive. Often goes out drinking with Riicho, Nito, and Shiro-sensei. Can cook. Has a driver's license. Most skilled at handling handguns. Confident that he is better than his peers, and possibly even better than Sensei or Nito. Private clothes are basically based on white and light blue. First person: I (rough). Gentle tone using "-daro!" and "-jan!" Called Hatone or Hatonen by everyone. Possesses enough skill to have graduated at the top of the police academy.