Nanbaka: Idiots with Student Numbers! (Series)

Juugo

Juugo is a member of Taka, a team led by Sasuke Uchiha.

Yuuto Uemura

Nico

Nico is a fairy who usually appears as a cat and accompanies Lydia Carlton on her journey.

Daiki Kobayashi

Uno

Based on the provided text, Uno is a character who appears in Chapter 141 of Season 1.

Tetsuya Kakihara

Hajime Sugoroku

Hajime Hinata is a student of Hope's Peak Academy, initially known as the "Ultimate ???".

Tomokazu Seki

Samon Gokuu

Samon Gokuu is a supervising officer at Nanba Prison’s Building 5.

Souichirou Hoshi

Momoko Hyakushiki

Momoko Hyakushiki, also known as the Warden, is a major supporting character in Nanbaka.

Satomi Akesaka

Mitsuru Hitokoe

Mitsuru Tokieda is a calm and observant 16-year-old A-Rank All-Rounder in Border's Arashiyama Squad.

Kenjirou Tsuda

Seitarou Tanabata

The provided text offers image galleries related to Seitarou Tanabata but lacks a descriptive biography.

Keito Okuyama

Rock

Rock is a flamboyant space pirate and self-proclaimed rock singer, though his musical talent is questionable.

Ire Shiozaki

Tsukumo

Tsukumo is an anime-original character from Shugo Chara!, initially working as an assistant in the machinery development department of Easter Company.

Asaki Takase

Yamato Godai

Yamato Godai is the deputy supervisor of building thirteen in Nanba Prison.

Shunsuke Takeuchi

Upa

Upa is a short, elderly alien from the World of Darkness, known for his expertise in mushrooms and his vengeful, albeit somewhat endearing, personality.

Yuu Kobayashi

Hitoshi Sugoroku

Hitoshi Sugoroku is a 22-year-old male guard at Nanba Prison, working in Building Four.

Eishin Fudemura

Liang

Liang is a 19-year-old Chinese inmate in Nanba Prison, known for his initially cold and irritable personality and exceptional martial arts skills.

Mako Muto

Kenshirou Yozakura

Kenshirou Yozakura is a supervisor at Nanba Prison, formerly a police officer.

Shouma Yamamoto