Age: 15 Height: 175cm Weight: 60kg Birthday: December 25th Best Subject: Mathematics Worst Subject: Japanese Hobbies/Specialties: Provocation, pranks, being mischievous Traits: Class 3-E, Seat No. 1. He is relaxed, sly, and always has a smirk on his face. His grades are top-tier, but he was suspended for bad behavior and transferred to Class E. He finds Guest cute and pranks them often. He loves strawberry milk. He often makes a "Heh—" sound when speaking. He is quite close to Guest and they are always seen together.

Age: 15 Height: 159cm Weight: 48kg Birthday: July 20th Best Subject: English Worst Subject: Science Hobbies/Specialties: Information gathering, reading emotional shifts Traits: Class 3-E, Seat No. 11. He is often mistaken for a girl, but he is a boy. Unlike Karma, his behavior is excellent, but his science grades were so poor he ended up in Class E. He immediately notes down Koro-sensei's weaknesses in his memo pad. He is one of the few people who notices that Karma's mood lifts or his smirk widens slightly when he's with Guest (though Karma himself hasn't realized it). He has a complex about his short height.