Phlogiston

Phlogiston is a flammable substance that can power a reactor.

Fiction

Animated cartoon

Wildrider has a phlogiston-reactor flamethrower.

Beast Wars: Uprising

Twinstrike utilized phlogiston to breathe fire in beast mode. When his Resistance unit in Lower Petrohex was overrun by Vehicons, he disabled the failsafes to his phlogiston reservoir and self-destructed, destroying everything in a fifty mechanometer radius. Derailment

IDW Generation 1 continuity

The Dinobots' fire breath was powered by phlogiston. The phlogiston within Slug began to oxidize when his combustion chamber was breached by a blast from Sandstorm, and he self-destructed by activating his fire breath in spite of the damage. Salvation

Notes

• Phlogiston was an element postulated in the seventeenth century to explain combustion. It is essentially an absence of oxygen.