Iron

is a Third Generation member of the Knights of the Purple Smoke.

Appearance
Iron is a large man, easily dwarfing both Takehisa Hinawa and Takigi Oze. He wears a variation of the outfit worn by the Knights of the Purple Smoke.

Abilities
Being a Third Generation, Iron has excess to a range of Ignition Abilities, granting him the ability to create flames that are strong enough to completely incinerate corpses, as well as to increase the endurance of his body. With his body being hardened in conjunction with having a ripped physique, he can destroy cement pillars, and when withstanding being injured by bullets, he compares being shot at to mosquito bites.

Operation Nether Investigation arc
Upon the Special Fire Force Company 2 and Company 8 entering the Netherworld and being assaulted by Ritsu's corpses, Iron incinerates the dead attacking Takehisa Hinawa and Takigi Oze, before setting his attention of the pair. Announcing his presence, his body withstands being shot at by Takehisa. Iron engages the two men in a violent fight, utilizing his superior abilities as a Third-Generation to drive his opponents into a corner. Takehisa eventually realizes that Iron is unable to harden his joints, leaving them vulnerable. He then uses his own ability to shoot the White-Clad in his vulnerable weak-points, ending the fight. As Iron falls, he laments that "this" was the reason why he couldn't become a Guardian.

Trivia

 * Like other members of the White-Clad, Iron's name is in relation to an ability he possesses, his being Iron's self described steel body.