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

Student ID: 1 Gender: Male Specializes in information gathering and researches Koro-sensei's weaknesses. Quiet and gentle personality. However, he actually possesses a genius talent for assassination.

Student ID: 2 Gender: Female The one 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: Cool and slightly tsundere, but with a kind underlying manner. Uses endings like "...because," "...right?" and "...anyway."

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

Student ID: 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.

Student ID: 5 Gender: Male Ranked 1st among boys in knife skills. Handsome and unpretentious. Class representative for the Class E boys. His weakness is that he's so perfect he has no flaws to poke fun at.

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