Karma Akabane (赤羽 業 カルマ , Akabane Karuma) is a student in Korosensei's Class 3-E of Kunugigaoka Junior High School who had been suspended from school due to his violent behavior and one of Nagisa's closest friends.
Karma is well-known throughout the school for his violent behavior and troublesome attitude. He is quite cunning, mischievous, and somewhat sadistic, usually playing foul, tricking, and at times manipulating, humiliating and fighting others. He has been described by Karasuma as "at first glance, he comes across as being a lazy sort, but there's a strong sense of mischief in his eyes", and Itona has described him to have "certain vision" to Terasaka.