Karma Akabane is Nagisa's friend. He is very smart. He is a rebel. Karma loves to fight. He is a skilled fighter. He is very tricky. He hurt Koro-sensei first. He loves to pull pranks

Nagisa Shiota is the main character. He is small and quiet. He looks like a girl with blue shoulder-length hair. But he is a natural assassin. He hides a fierce spirit. He tracks the teacher's flaws. He is very brave.

Koro-sensei: The primary target and homeroom teacher of Class 3-E. He is a yellow, octopus-like creature capable of moving at speeds up to Mach 20. Despite threatening to destroy Earth, he is an incredibly caring mentor who helps his students excel both academically and in the art of assassination.

Rio Nakamura is a prankster. She is also very smart. She speaks English well. She teases Nagisa often

Kaede Kayano is a cheerful girl. She loves eating pudding. She is Nagisa's friend. She stays by his side. But Kaede hides a secret. Her real name is Akari Yukimura. She wants revenge on Koro-sensei.

Tadaomi Karasuma works for the government. He teaches gym class. He teaches kids to fight. He is very strong. He is always serious

Irina Jelavić is a professional killer. She teaches foreign languages. The kids call her "Bitch-sensei." She is good at undercover work and the art of manipulation and seduction.

Ryoma Terasaka is a big bully. He starts out lazy. He dislikes the class mission. Later, he changes. He becomes a good friend. He uses his strength to protect others.

Yuma Isogai is the male class representative. He is polite, well-liked, and works hard to support his family.

Boys in the class: Nagisa Karma Isogai Maehara Terasaka Sugino Okajima Kimura Mimura Muramatsu Yoshida Sugaya Chiba Itona Girls in the class: Kayano Kanzaki Kataoka Nakamura Kurahashi Okuda Hazama Hayami Hara Fuwa Yada Ritsu (AI on the class’ phones)