Pyrokinesis

Pyro — Cannot ignite anything; carries a flamethrower to supply the fire he then controls

Human Torch — Released the nova burst, his maximum output, which exhausts his flame entirely afterwards

Endeavor — Overheats under sustained output, a stated physiological cap on the Hellflame Quirk

Natsu Dragneel — Consumed an opponent's flame to restore his own stamina, turning a fire user into a supply line

Zuko — Relearned firebending from the original dragon source after losing rage as his fuel

Shoto Todoroki — Left side generates fire and right side generates ice; relying on only one causes his body to fail

Firestorm — His actual ability is transmutation of inorganic matter; fire projection is a byproduct of the nuclear fusion that powers him

Firestorm — Generates and directs nuclear flame at range

Firestorm — Absorbs and redirects nuclear energy rather than merely resisting it

Human Torch — Ignites his whole body and controls the flame's shape at range

Human Torch — Absorbs surrounding fire rather than being harmed by it

Human Torch — Shapes flame into solid-seeming constructs and barriers

Shoto Todoroki — Generates flame from his left side, the half he refuses to use for most of the early series

Natsu Dragneel — Generates and shapes fire from his own body as a Dragon Slayer

Natsu Dragneel — Cannot eat his own flame, the stated limit that stops it being infinite

Natsu Dragneel — Dragon Slayer magic is stated to be taught by a dragon, not inherited

Zuko — Firebends at a level that makes him a match for trained masters

Zuko — His bending weakens when his sense of purpose does, which the series treats as literal

Zuko — Generates fire from breath control rather than from rage, the relearned method

Endeavor — Hellflame generates fire hot enough to vaporise rather than burn

Endeavor — Overheating is his stated weakness, which is why he sought a successor

Endeavor — His flame is stated to be more powerful but less enduring than his son's

Nezuko Kamado — Blood Demon Art produces flame that burns demons but not humans

Nezuko Kamado — The flame is selective, which no other demon's Blood Demon Art manages

Nezuko Kamado — Her flame strengthens a slayer's blade rather than only attacking

Aang — Learns firebending last, after burning someone he cares about

Sanji — Diable Jambe ignites his leg through friction before striking

Sanji — He fights only with his legs to protect his hands for cooking

Sanji — Ifrit Jambe raises the heat past what his own body can safely take

Portgas D. Ace — Becomes and controls fire as a Logia user

Portgas D. Ace — Produces fire at a scale that destroys fleets

Portgas D. Ace — His death is caused by choosing to take a blow rather than by being beaten

Hiei — The Dragon of the Darkness Flame is borrowed rather than his own fire

Hiei — Using the dragon nearly destroys his own arm, the stated cost

Hiei — Summons the dragon a second time and survives by controlling it instead

Ghost Rider — Hellfire burns the soul rather than the body

Ghost Rider — The Penance Stare forces a target to feel all the pain they have caused

Ghost Rider — Johnny Blaze and the spirit are separate wills sharing a body

Roy Mustang — Ignites by transmuting oxygen concentration, then sparking it with a glove

Roy Mustang — Rain makes him useless, the most-cited weakness in the series

Roy Mustang — Controls the flame's shape and intensity, not just its direction

Roy Mustang — His Ishvalan war record is the reason he seeks command, not glory

Katsuki Bakugo — His sweat is nitroglycerin, which he detonates from his palms

Katsuki Bakugo — Output rises in heat and falls in cold, since the quirk depends on sweat

Katsuki Bakugo — His aggression is written as insecurity, which the series states outright

Roy Mustang — Creates a focused blast that punches through a wall rather than spreading