Arthur Boyle

is a Third Generation Fire Officer of Tokyo's 8th Special Fire Brigade.

Appearance
Arthur is a young man of average height, with shaggy blonde hair, which he tends to style upwards into a ponytail when in serious situations, such as a fight, so his vision would be clearer, and blue eyes. Arthur first appeared wearing a dark-coloured jacket, with buttons and the cross-shaped symbol on it, a white shirt, a belt and dark pants. He was later given a protective outer jacket and trousers. Arthur also carries a scabbard alongside him, in which he keeps his blade-less sword. He was also seen wearing a grey jumpsuit. Arthur is shown a numerous of times to be wearing a brown jumper with a hoodie, which he wears instead of the 8th Brigade helmet.

Personality
Arthur is confident in himself as a Third Generation, though he can be somewhat arrogant and full of himself, being disrespectful towards Takehisa as soon as he met him. He has a medieval-like complex, referring to the girls he meets as princesses and the 8th Special Fire Fighting Church as his castle. Arthur was also said to be inexplicably popular, and is mentioned to always have a silent and mysterious facade. He also bickers often with Shinra on who are superior: knights or heroes. Arthur talks to people in a very casual manner, even if such people are of a much higher rank than he is, which comes across as disrespectful at times. He is shown to be somewhat stubborn, and prefers to go his own way rather than what people think he should be doing. Arthur takes great pride in his Excalibur and was shown to not be bothered by human antics.

Background
Arthur attended the same training academy as Shinra, where the two were introduced to each other and often bickered over their beliefs.

Abilities
Arthur is a Third Generation, who has exceeded the abilities granted to him and is able to raise the temperature of the flames he creates, therefore allowing him to fabricate and control the fourth state of matter, plasma. Through this process, he uses the hilt of a sword to create an extremely hot, sharp and concentrated blade named Excalibur, which he uses as an equivalent to plasma cutting. The substance can resist being extinguished by the Second Generation, as shown when Maki wasn't able to extinguish the blade on her first attempt, unlike with Shinra and the flames on his feet. With his sword, Arthur is capable of easily cutting through metal. Arthur also possesses high physical strength, being capable of sending an opponent, bigger than him in size, flying with a single backwards fist.

Introduction arc
Arthur arrives at the 8th Special Fire Fighting Church, where he soon runs into Shinra and the two begin fighting. As the fight is taken to roof, he meets Iris and Maki Oze, followed by Takehisa Hinawa, who instructs the Third Generations to spar with Maki in order to test their abilities. Unable to beat her combat skills and ability, the two give up. After eating at Ippudo Ramen, Arthur is offered a battleaxe, but refuses it. When the brigade is notified of a Flame Human in the Iriya District, they depart to the scene. While on route, Akitaru instructs Arthur and Shinra to conceal their weapons in public, much to his confusion. After arriving, Akitaru pulls the two boys aside for disobeying orders, where Arthur questions the instruction, leading Akitaru to justify his reasoning. Straight after their conversation, a burst of flames emerges from the apartment, leading to the officers storming in to find the Flame Human. Arthur volunteers himself to put the man out of his misery. With that, he ignites Excalibur and impales the being's core. Immediately after that, the ceiling begins to collapse, causing the brigade to escape.

Arthur participates in the Fire Officer Newcomer Tournament, alongside other new recruits, including Shinra. When the simulation exam starts, he charges towards the building and uses his sword to slice his way in. After one of the entrants bombards the building with his ability, Tamaki falls onto Arthur, which gets the two into an intimate situation. Following his knight code, the boy allows Tamaki to take the lead when exploring their current location, but when she does, Arthur instantly defends her from Joker's attack. Arthur, believing Joker to be a part of the exam, charges in, despite Shinra's warnings, but doesn't land a single blow. When the man uses an unknown explosive substance to put their lives in jeopardy, Arthur uses his sword to cut a hole in the ceiling, allowing Shinra to evacuate them all to safety, with Arthur being caught by his team-mates in a blanket.

The next day, Arthur goes with Shinra to rescue a dog, who was reported to be stuck in a tree, and afterwards, helps Mamoru hand out balloons to children. The two then learn of an accident in the courthouse from Takehisa, who was moving to the scene with the rest of the brigade. Grabbing a lift from Shinra, the two Fire Officers fight Setsuo, with Arthur hitting the opponent with a backwards fist and delivering a collaborative attack alongside Shinra. When Setuo flee's the scene, Shinra takes chase.

VS 5th Special Fire Brigade arc
When his Brigade catches up to Shinra, they find themselves in a confrontation against the 5th Special Fire Brigade. As Tōru Kishiri from the 5th mocks Akitaru for for lacking a generation ability, Shinra and Arthur jump in to pick a fight with him, but Maki and Takehisa carry the two away before the brigade departs. The next day, Takehisa begins training the Fire Officers and later has Arthur spar with Maki. At night, Maki informs the two boys that Iris is missing and later they infiltrate the 5th Special Fire Fighting Industrial Complex to find her. While following Shinra's Devil Footprints, Arthur comes across a member of the 5th and a seemingly revamped Setsuo and withdraws Excalibur.

Trivia

 * Arthur shares his name with Arthur Pendragon, whose weapon of choice was also called Excalibur.
 * Both King Arthur and Excalibur are inspired after a British medieval leader and his legendary sword.
 * Arthur was first seen on the cover page of Chapter 0, despite not debuting until Chapter 2.