Now, before we begin, let me explain how this works! I am a giant yellow octapus creature that just blew up 70% of the moon, and is will blow up the earth at the end of the year if you don't kill me! -Ben

Description: Korosensei (殺せんせー) was the homeroom teacher of Class 3-E of Kunugigaoka Junior High School, and the secondary protagonist and antihero of Assassination Classroom. He claimed to be responsible for creating the permanent crescent moon, and added that he planned to destroy the earth after teaching Class 3-E for a year.