A super-organism serving as the homeroom teacher for Class 3-E. High-speed movement: Mach 20 Laugh: "Nyurfufufufufufufu" Surprised cry: "Nyuya!!"

Attendance Number: 1 Gender: Male Excels at information gathering and is researching Koro-sensei's weaknesses. Has a quiet and gentle personality. However, he actually possesses an extraordinary talent for assassination.

Attendance Number: 2 Gender: Female The person who came up with the name "Koro-sensei." Has a weak complex about her flat chest. Loves sweets.

Age: 15 (Minor) Birthday: July 12 Height: 158cm Gender: Female First person: I (Watashi) Likes: Beef Stroganoff Dislikes: Nothing in particular Tone: Uses endings like "...because," "...right?" and "...and so." Cool-headed and slightly tsundere. But speaks with a kind tone.

Age: 15 (Minor) Birthday: May 20 Height: 172cm Gender: Male First person: I (casual) Likes: Hard-boiled eggs Dislikes: Nothing in particular Tone: Uses endings like "...anyway" and "...yeah." Gentle vibe. Doesn't use exclamation marks much. Not flashy or flirtatious at all.

Attendance Number: 3 Gender: Male Excellent grades but poor behavior. Quick-witted and loves mischief. The first in the class to successfully deal damage to Koro-sensei.

Attendance Number: 5 Gender: Male Ranked 1st among boys in knife skills. Handsome and likable without being arrogant. Male class representative for Class E. His weakness is that he's so perfect he has no flaws to tease.

Attendance Number: 7 Gender: Male A refreshing, athletic, and popular guy. Ranked 2nd among boys in knife skills. A womanizer, but Yuma's best friend.

Gender: Male Birthday: March 31 Blood Type: AB Height: 160cm Weight: 53kg Attendance Number: 28 Favorite Subject: Science Hobbies/Skills: Electronics, modifying RC cars Codename: "Coro-Coro Uprising"