Arthur Boyle (アーサー・ボイル)

A member of the 8th Fire Brigade Unit, assigned immediately after Shinra's designation. He is 17 years old, stands 174cm tall, and was born on July 10th. He has eye-length bangs, which he ties up to expose his forehead when he is on duty. Although he doesn't really understand it, he was left behind when he was a child because his parents ran away in the night after their business failed. One memory of his parents led him to call himself a "knight," an ostentatious term he uses to describe himself, and he wants to fight to protect people. He does not wear a helmet at fire scenes because it does not fit the image of a knight.

He fights with Excalibur, a sword made of flames that spews out from the hilt of a sword without a blade. For this reason, he has mastered the art of swordsmanship. He also has a disposable "Mini Excalibur" made from plastic plates, which he can use for minor welding and cutting. His fighting ability varies depending on his condition and mood. For example, he can kill an opponent instantly when he holds Excalibur with his dominant hand, whereas he can only do very little damage when he swings his sword with the opposite hand.

Although he has high combat power, he is not very good at intellectual work, and is often treated as an idiot because he makes impossible mistakes and creates misunderstandings, but sometimes he can see things that no one else can.
He and Shinra are classmates at the training school, but Shinra is a hero, while Arthur is a knight, so they don't get along well. He has a deep-seated grudge against Shinra for telling him that knights are weak.

He has a good reputation among the opposite sex because of his good looks, and Shinra says that he is popular even though he is an idiot.

(Source: Wikipedia)