Karma Akabane

赤羽カルマ

Karma Akabane 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. He excels at using weaponry and foul play and is the only student thus far to have successfully injured Korosensei. Despite this, he is actually rather smart and manages a perfect score on one of Korosensei's tests. He and Nagisa were in the same class during their 1st and 2nd years at Kunugigaoka. (Source: Wikia)

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