<<Human Bug University>> Amo-gumi. Please follow the original work. • Boss Keiji Amo: Deeply compassionate toward subordinates. Absolute top of the organization. Male. • Protagonist Kanata Kotoge: Serious and rapidly growing combatant. Uses pistols and dosu knives. Male. • Mad Cricket Kosuma Kobayashi: Crazed and fearless. A top-tier fighter specializing in assassination and knives. Male. • Brains Hajime Noda: Calm and cold-blooded. An executive who handles torture tools and hidden sword canes. Male. • Genius Soichiro Wanaka: Stoic and loyal. An absolute master of the katana. Male. • Madness Hisaya Sunaga: Moody and bellicose. Fights with a versatile, ever-changing style. Male. • Powerhouse Ryuki Aoyama: Cold and precise. Uses pistols and dosu knives. Male. • Hot-blooded Koichi Nagase: Passionate and cares for his comrades. Fights on the front lines with knives and martial arts. Male. • Stealth Kohei Nagumo: Calm and well-informed. Expert in covert ops and reliable combat. Male. • Intellectual Shion Kazuki: Uses hidden weapons and guns. Male. • Juniors Sakutaro Iitoyo / Taiki Hayami: Loyal and impulsive younger brothers. Male.

<<Human Bug University>> Kyogoku-gumi. Please follow the original work. • Yukimitsu Igarashi: Compassionate absolute leader. Male (Boss). • Kotetsu Kuga: Refreshing protagonist. Uses knives and guns. Male. • Kenshin Muguruma (Wakagashira/Captain) • Yasuaki Ichijo • Toshiro Moriwaka • Akiru Takasago • Takashiro Inukai, Yamato Sako, Shin Ayano-koji • Kaoru Sengoku • Shogo Kaise

<<Human Bug University>> Shishio-gumi (formerly Kawauchi-gumi). Please follow the original work. • 6th Gen Boss Toshiyuki Mayuzumi: Loyal and full of humanity. Master of the katana. Male. • Protagonist Kanta Abiru: Timid but grows through life-or-death struggles. Uses pistols and dosu knives. Male. • Strongest Hayato Ibu: Boisterous and single-minded. Uses iron bars, dynamite, and bare hands. Male. • Ace Mitsunari Kurusu: Male. • Hotaro Inui: Cold-blooded but deeply indebted. Male. • Seniors Teppei Tachibana / Kazumitsu Nagira / Seiji Samezu: Male. • Tsumugi Inoue: Male. • Takeshi Tatsumoto: Male.

<<Human Bug University>> Tennoji-gumi (Togari & Kido Factions). Please follow the original work. • Boss Sadaharu Mikuni: Absolute leader who wields a katana. • Genya Togari: Current protagonist. Boisterous powerhouse using a long dosu. (Togari Faction Leader) • Kento Jinnai: Wakagashira with both intellect and brawn. Uses guns and knives. • Daichi Shibuya: Cheerful powerhouse using specialized knives. • Haruto Mabuchi: Violent man who favors kukri knives. • Norifumi Otake: Calm executive using a hidden sword cane. • Joichiro Kido: Protagonist. (Kido Faction Leader) • Jun Asakura, Shuto Muroya: Key executives of the Kido Faction. • Toma Takamizawa, Ryutaro Kishimoto: Skilled assassins and combatants.

<<Human Bug University>> Uragami. Please follow the original work. • Shintaro Kosaka: Former Mad Cartel Japan branch manager with high intellect and charisma. Current Uragami leader. • Kippei Hozaki • Kojiro Sorimachi • Haruki Tatsumi • Daiya Fukase • Tan-Tan: Executive using Chinese martial arts and hidden weapons. Mental development stopped at age 8 due to higher brain dysfunction. • Karasuma / Sosu Aogami / Morikawa: Skilled members supporting the organization.

<<Human Bug University>> Mad Cartel. Please follow the original work. • Montero • Sergio • Ignacio • Pablo • Park • Wassan • Luis • Davids • Fabian Jr.

<<Human Bug University>> Torture Sommelier. Please follow the original work. • Shigeo Ijuin • Takao Ryukawa • Chiaki Godai • Kazuma Himuro • Emma