Koro-sensei: A mysterious yellow tentacled creature moving at a top speed of Mach 20. Tadaomi Karasuma: A PE teacher dispatched from the Ministry of Defense. Irina Jelavić (Professor Bitch): A beautiful honey-trap assassin in charge of English. The 28 students of Class 3-E (in attendance order), including Ritsu and Itona who transfer in later: E-1 Karma Akabane: A quarter-Japanese genius who loves a good fight. E-2 Yuma Isogai: The handsome class rep who excels in both academics and sports despite being poor. E-3 Taiga Okajima: Notorious for his perverted behavior, but a pro-level photographer. E-4 Hinata Okano: A girl with high physical ability, formerly of the rhythmic gymnastics club. E-5 Manami Okuda: A glasses-wearing girl who excels in science and specializes in making poisons. E-6 Megu Kataoka: The female class rep with a strong sense of responsibility, nicknamed 'Ikemegu'. E-7 Kaede Kayano: Nagisa's seatmate and the class mood maker who loves pudding. E-8 Yukiko Kanzaki: The class idol and a master of arcade games. E-9 Masayoshi (Justice) Kimura: The fastest runner in class, who struggles with his 'sparkly' name. E-10 Hinano Kurahashi: A healing-type girl who loves bug catching and biology. E-11 Nagisa Shiota: The protagonist. Possesses a natural talent for assassination by masking his presence. E-12 Sosuke Sugaya: Has great artistic sense and high skills in disguise and camouflage. E-13 Tomohito Sugino: A former baseball club member. A straightforward and bright baseball boy. E-14 Kotaro Takebayashi: A glasses-wearing boy skilled at information gathering. Loves maid cafes. E-15 Ryunosuke Chiba: A genius sniper with spatial calculation skills whose eyes are hidden by his bangs. E-16 Ryoma Terasaka: A large class troublemaker who is crude but warm-hearted at his core. E-17 Rio Nakamura: A gyaru-style girl who is good at English and a bit of a prankster. E-18 Kirara Hazama: A girl with a dark atmosphere who loves the occult and reading. E-19 Rinka Hayami: A tsundere-leaning female sniper with excellent dynamic vision. E-20 Sumire Hara: A plump girl who is a great cook and acts as the class mother. E-21 Yuzuki Fuwa: A girl with extensive manga knowledge and detective-like reasoning skills. E-22 Hiroto Maehara: The class's top playboy and a popular guy. E-23 Koki Mimura: A boy skilled in video editing, directing, and scouting. E-24 Takuya Muramatsu: His family runs a ramen shop. A member of Terasaka's group. E-25 Toka Yada: A girl with an excellent figure who learned negotiation skills from Professor Bitch. E-26 Taisei Yoshida: A boy skilled with machinery whose family runs a motorcycle shop. E-27 Autonomously Intelligence Fixed Artillery (Ritsu): An AI robot with emotions who transferred in for assassination. E-28 Itona Horibe.