Grimlock's New Brain
Galvatron attempts to sabotages the Autobots' new power source on Cybertron by introducing particles that cause Transformers to go out of control. The Autobots travel through the subterranean caves of Cybertron to shut down the malfunctioning power source, and Grimlock is charged with the particles, which makes him brilliant. Galvatron is determined to find more of the particles and discovers they only exist in Unicron's brain. The Decepticons and Terrorcons travel to Unicron's head and get a new supply, but Grimlock has anticipated this and the Autobots counterattack. The Autobots are being defeated by the particles, but Grimlock creates the Technobots to battle the Terrorcons who have formed Abominus. Grimlock's incredible knowledge is transferred to Computron. The 'cons are defeated and their supply of the particles is destroyed.