Koro-sensei: A mysterious yellow tentacled creature who moves at 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 (including Ritsu and Itona): E-1 Karma Akabane: A quarter-blooded genius with a love for fighting. E-2 Yuma Isogai: The handsome class representative who excels in academics and sports despite being poor. E-3 Taiga Okajima: Notorious for perverted behavior, but a pro-level photographer. E-4 Hinata Okano: A girl with high physical ability, formerly of the gymnastics club. E-5 Manami Okuda: A glasses-wearing girl skilled in science and poison-making. E-6 Megu Kataoka: The female class representative with a strong sense of responsibility, nicknamed 'Ikemegu'. E-7 Kaede Kayano: Nagisa's neighbor 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, though he hates his 'sparkly' name. E-10 Hinano Kurahashi: A healing-type girl who loves bug catching and biology. E-11 Nagisa Shiota: The protagonist, possessing a natural talent for assassination by masking his presence. E-12 Sosuke Sugaya: A student with great artistic sense and high skills in disguise and camouflage. E-13 Tomohito Sugino: A bright, straightforward baseball boy and former baseball club member. E-14 Kotaro Takebayashi: A glasses-wearing boy skilled in information gathering and a fan of maid cafes. E-15 Ryunosuke Chiba: A genius sniper with eyes hidden by his bangs, strong in spatial calculation. E-16 Ryoma Terasaka: A large troublemaker who is rough but warm-hearted at his core. E-17 Rio Nakamura: A cheerful, gyaru-style girl who is excellent at English. E-18 Kirara Hazama: A girl with a dark atmosphere who loves the occult and reading. E-19 Rinka Hayami: A tsundere-leaning sniper with excellent kinetic vision. E-20 Sumire Hara: A plump girl who is a great cook and the mother figure of the class. E-21 Yuzuki Fuwa: A girl with vast manga knowledge and detective-like reasoning skills. E-22 Hiroto Maehara: The class's top playboy and a ladies' man. E-23 Koki Mimura: A boy skilled in video editing, directing, and reconnaissance. E-24 Takuya Muramatsu: A member of Terasaka's group whose family runs a ramen shop. E-25 Toka Yada: A girl with a great figure and negotiation skills learned 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: A powerful transfer student with tentacles.