Knights of the Ashen Flame

The, otherwise known as the are a group of individuals that are under the guidance of the Preacher.

Their goals remain unknown, but they are using artificial means to create Flame Humans, and trying to acquire the Adora Burst.

Appearance
The White Hoods have two different uniforms. The most common among them, is a white burqa-type mask that conceals their face, a large white cape with a red cross-insignia on the back resembling that of the Special Fire Brigade as well as a white shoulder-guard, a dark jumper with the same cross-insignia on it, white gloves, a jagged belt around their waist that holds up their white trousers that have a thick dark line going across the thigh area, and seemingly go all the way down to their feet, covering them. Some members of the group instead don a white cloak that covers their shoulders and has a hood.

VS. 1st Special Fire Brigade arc
One of the White Hoods appears overlooking the scene of Shinra Kusakabe and Rekka Hoshimiya's fight, along with a comrade on a rooftop. Following Rekka's capture, the archer takes aim at him with his Ignition Ability, and fires an arrow at Rekka's chest, killing him in the process. Turning their attention towards the other Fire Officers, the person attempts to impale Karim Fulham, but manages to sever Foien Li's arm instead. Unable to visually locate the Fire Officers, and having their position exposed, the two retreat, having accomplished their objective, commenting that the "Nativity Flame Festival" has begun throughout Tokyo.

Preacher Pursuit arc
The White Hoods appeared along with Shō Kusakabe in their secret headquarters.