Fire-breath is an ability that several Transformers with reptilian or monstrous beast modes have for combat in their alt modes.
History[]
Transformers: Fall of Cybertron[]
As Shockwave's prized test subject, Grimlock received numerous upgrades and powers, including the ability to breathe fire in his Tyrannosaurus form.
Transformers: Rescue Bots[]
"The Island of Misfit Tech"[]
A mechanical bull developed for humans to ride could shoot fire from its nostrils.
Transformers: Robots in Disguise[]
"Suspended"[]
Crazybolt can breathe fire in his robot mode, or spray a trail of flaming exhaust in vehicle mode.
"The Golden Knight"[]
Flamesnort can breathe fire in his robot mode, too.