When the Autobots were disabled by a Decepticon sneak attack, Spike prompted the Autobot computer Teletraan I to release fire-retardant foam. The foam landed on the Decepticons and immediately shorted out their circuitry. Recognizing this unbeatable foe, Megatron ordered an immediate retreat. The Ultimate Doom, Part 1 The Autobot Ironhide was also capable of releasing the substance, among other compounds, from a nozzle embedded in his wrist. That guy could shoot just about anything. Why he never used its almighty power to annihilate the Decepticons once and for all is not known.