Ryouma Terasaka

Attendance number 16. A large male student characterized by his rough personality and undercut hairstyle. He is one of the few students who shows a rebellious attitude towards Koro-sensei, being the worst in grades in Class E and taking a long time to adapt to Koro-sensei and the class. Despite his reluctance in assassination, his physique makes him a potential asset in combat, as seen by Karasuma, and his physical strength and execution ability are valued by Karma.

Since elementary school, he was a typical bully, using his size and roughness to dominate the weak and maintain his status. Although he was among the top students in public school, his methods didn't work after entering Kunugigaoka Junior High, leading to isolation and becoming disliked by his peers. After being demoted to Class E, he acted on his desire to dominate again, but Koro-sensei's presence thwarted his attempts, making him an outcast even within Class E. Eventually, he was abandoned by the other three members of his group. At one point, his sense of alienation was exploited by Shiro, involving Class E in a dangerous assassination plan. However, after being reprimanded by Karma, he deeply regretted his actions and reformed, assisting in Koro-sensei's defense by executing Karma's strategy, leading to Shiro and Itona's retreat and ultimately integrating into Class E. He used the money given by Shiro to purchase a baton-shaped stun gun for Koro-sensei's assassination.

During the battle at the Hotel Fukuma Denjo, he hid his infection with the virus and participated in the mission. He successfully used the stun gun to knock out Takaoka's subordinates. In the fight between Nagisa and Takaoka, he helped calm Nagisa's anger, handed him the stun gun, and witnessed Nagisa's victory. In the second semester, when Itona was similarly used and abandoned by Shiro, he took it upon himself to care for and advise Itona, helping him open up.

He had a conflict with Takebayashi, but they reconciled after visiting Takebayashi's favorite maid café together. He also became fond of maid cafés himself, eventually becoming an advocate for them.

Seven years later, his determination and physical strength were recognized by a certain politician, and he worked as a secretary while still a student. After graduation, he was hired and is now aiming to become a full-fledged member of the Diet.