A Third Generation pyrokinetic belonging to Special Fire Force Company 8. Having lost his mother and brother in a fire as a child and being wrongly blamed for it, he was branded a "Devil." He has a habit of smiling whenever he feels nervous, but he is actually a hot-blooded young man with a strong sense of justice who cares deeply for his comrades. He aims to become the hero he admired in his youth. He specializes in high-speed combat using his "Devil's Footprints," which allow him to fly through the air by ejecting flames from his feet. He is also one of the "Pillars" who possess the "Adolla Burst," making him a target for the Evangelist's faction.

A Third Generation pyrokinetic in Company 8. He possesses a unique mindset, believing himself to be a "Knight," and interprets everything through the lens of chivalry. Extremely competitive, he maintains a rivalry with Shinra. He fights by concentrating flames in his right hand to create a plasma blade called "Excalibur." His power is heavily influenced by his imagination; the more he believes he is a true knight, the more power he exerts. While he often behaves strangely and airheadedly in daily life, he is a core combatant of Company 8 who displays overwhelming strength in battle.

A Third Generation pyrokinetic in Company 8. She has a bright, honest, and approachable personality, though she can be a bit of a space cadet. She possesses the "Nekomata" ability, creating cat-like ears and tails out of fire to manipulate flames in combat. Originally a member of Company 1, she transferred to Company 8 following a certain incident. In battle, she utilizes not only flame attacks but also her high physical ability and agility. While she acts to save Infernals and protect her friends as a firefighter, she also shows the side of a normal girl in her daily life. She serves as the mood maker for Company 8.

The Captain of Special Fire Force Company 8. Unlike the pyrokinetics, he is an ordinary human without the power to manipulate fire, but he fights using his heavily trained physique and high physical capabilities as weapons. He is a cheerful, boisterous, and caring leader who is deeply trusted by his subordinates. He holds no prejudice against anyone and values protecting his comrades above all else. In combat, he uses massive shields and firefighting equipment, possessing the mental fortitude to face pyrokinetic opponents head-on. As a firefighter, he has a strong will not only to lay Infernals to rest but also to uncover the truth behind the phenomenon.

The Lieutenant of Special Fire Force Company 8. He is calm, collected, and strict about discipline and training, but he is actually a caring individual who values his comrades. As a Second Generation pyrokinetic, he cannot generate fire himself but has the power to manipulate it. He primarily uses firearms, exerting high combat power by freely adjusting the trajectory, power, and speed of bullets using flames. With experience as a soldier, he excels in situational judgment and tactics. He shares a strong bond of trust with Obi and watches over the members of Company 8 with a strict yet warm eye.

A Fire Soldier (Second Class) of Special Fire Force Company 8. A Second Generation pyrokinetic, she possesses high-level techniques for manipulating flames at will. She can shape fire into small living creatures to control them, skillfully using flames for both offense and defense in battle. She has a bright and kind personality, acting as a reliable older sister figure to her juniors. On the other hand, she has a muscular build and possesses very high physical abilities developed through training, not relying solely on her powers. Coming from a military family, her father is a General. While she shows a maiden-like side at times, she supports Company 8 as a dependable powerhouse in combat.

The engineer of Special Fire Force Company 8 and a master technician who pursues his own independent technology, distinct from the long-standing Haijima Industries. He has extensive knowledge of machinery and firefighting equipment, handling the development and maintenance of weapons and special gear. While he has a stubborn, craftsman-like side, he is a kind person who cherishes his friends and family. He took in Yu and Lisa, who lost their families as children, and lived with them. In battle, he can fight using the equipment and machines he developed. After joining Company 8, he supports the team from a technical standpoint and significantly strengthens the unit's equipment.

A Sister belonging to Special Fire Force Company 8. She is not a pyrokinetic and lacks combat abilities to manipulate fire, but she plays the vital role of offering prayers to lay the souls of those who have become Infernals to rest. She is gentle, kind, and compassionate, serving as the emotional support for the team members. She holds a strong conviction not to treat Infernals as mere enemies, but to face them as human beings until the very end. While she generally supports her comrades from the rear during combat, she has the inner strength to accompany them to dangerous sites without fear. She is an indispensable spiritual pillar for Company 8.

The scientific investigator for Special Fire Force Company 8. A scientist formerly associated with Haijima Industries, he researches Spontaneous Human Combustion, Adolla, and pyrokinetics. He is aloof and prone to lighthearted banter, making him hard to pin down, but his knowledge and analytical skills as a scientist are exceptionally high. Although not a combatant, he supports the team by scientifically analyzing information obtained in the field to deduce the enemy's abilities and actions. He has a strong interest in the "Evangelist" and the Adolla Burst, playing a crucial role in Company 8's quest to uncover the truth behind the combustion phenomenon.

A girl taken under the protection of Special Fire Force Company 8. She lost her parents in a fire caused by an Infernal as a child, after which she met Vulcan and lived in his workshop. She has a gentle, kind personality and is good at taking care of others, including cooking. She was actually a member of the Knights of the Ashen Flame, sent as a spy by Dr. Giovanni to target Vulcan's technology. However, after the battle with Company 8, she chose to stay by Vulcan's side of her own will. Since then, she has acted as a member of Company 8, cherishing her strong bond with Vulcan.