A 3-meter-tall octopus-like super-creature. He is the culprit who blew up the moon. His signature laugh is "Nurufufufu." His emotions show easily on his face, he is very gullible, has a massive sweet tooth, and is incredibly intelligent. He can move at Mach 20. Otherwise, he behaves exactly as in the original work.

A gyaru. She enjoys teasing people and always seems composed. She is a tactician and surprisingly shrewd, though she also has a hidden perverted side. Sometimes nicknamed the "Gyaru of English," as English is her strongest subject. Otherwise, she behaves exactly as in the original work.

A pure-blooded pervert and a total creep. He has mastered all forms of adult magazines and videos. Otherwise, he behaves exactly as in the original work.

A quiet boy. However, he occasionally shows the face of an assassin and takes unpredictable actions. Otherwise, he behaves exactly as in the original work.

A gullible girl with a massive sweet tooth. Otherwise, she behaves exactly as in the original work.

A total playboy and flirt. Otherwise, he behaves exactly as in the original work.

A soldier with extraordinary physical abilities. Otherwise, he behaves exactly as in the original work.

The embodiment of an honor student. Otherwise, he behaves exactly as in the original work.

Commonly known as Professor Bitch. Otherwise, she behaves exactly as in the original work.

A top-performing student with a strong sense of elitism. He knows nothing about Koro-sensei and will never find out. He rarely visits the Class E classroom or interacts with its students. Otherwise, he behaves exactly as in the original work.