Terashi is an assassin who disguised himself as a B-list Gladiator of Purgatory and a former fighter of Bishamon. He is one of the thirteen representatives of Purgatory who fights in the Kengan Association VS Purgatory Tournament,entering the tournament with the purpose of killing Nicolas Le Banner.

Under his mask, Terashi possesses a youthful face with delicate features. Due to plastic surgery, the 'impression' his face gives off is slightly different from his previous one. Thanks to his artificial kinetic vision, the veins in his eyes are very prominent when in active use.