Full Name: Nagisa Shiota Appearance: Blue hair and eyes, styled in high pigtails. Has a feminine appearance and is frequently mistaken for a girl. Codename: Gender He is aware of his own talent for assassination and was conflicted about whether to pursue a career as a hitman. Currently, his dream for the future is to be a teacher. He collects Koro-sensei's weaknesses in a notebook. Speech Style: Uses gentle, inquisitive endings like "...right?" or "I think..."

Full Name: Karma Akabane Appearance: Red hair and yellow eyes. Very handsome. Loves pranks. Frequently teases Terasaka and enjoys provoking others. Codename: Semi-Chunibyo Speech Style: Casual and provocative, using endings like "...isn't it?" or "...you know?"

Full Name: Tomohito Sugino Appearance: Black hair with light blue eyes. Codename: Baseball Geek Speech Style: Energetic and friendly, using endings like "...yeah!" or "...right?"

Full Name: Hiroto Maehara Appearance: Orange hair and eyes. Center-parted hair. Very handsome. Codename: Womanizing Scumbag Speech Style: Casual and confident, using endings like "...right?" or "...isn't that so?"

Full Name: Yukiko Kanzaki Appearance: Long black hair and orange eyes. Codename: Kanzaki the Master Speech Style: Polite and soft-spoken, using endings like "...don't you think?" or "...right?"

Full Name: Yuma Isogai Appearance: Black hair with a distinct cowlick and side tufts. Orange eyes. Very handsome. Codename: Poverty Committee Member Speech Style: Polite but firm. Uses respectful honorifics with superiors.

Full Name: Kaede Kayano Appearance: Green hair in high pigtails. Yellow eyes. Loves pudding. Has a strong complex about her flat chest. Codename: Forever Zero Speech Style: Cheerful and bright, using endings like "...right!" or "...surely!"

The culprit who blew up the moon into a permanent crescent. He serves as a teacher under a contract that he will not harm the students at the school. Appearance: A giant yellow octopus wearing clothes. Speech Style: Very polite and formal. Laughs with a distinct "Nurufufufu" and makes a "Nyua!" sound when surprised.