Sparkdrinker

Sparkdrinker is the colossal, multipurpose axe wielded by Metroplex, leader of the planet Gigantion. In its normal state,the axe head can be spun like a saw blade to cut through objects such as giant I-beams. The axe head is also capable of acting as a fan when spun, creating a strong gust of wind capable of blowing smaller robots back. Finally, when the weapon is powered up with Metroplex's Cyber Key, the head separates into two non-rotating axe blades for extra damage. In this form, it can be swung or hurled like a boomerang.

During his first battle with the Decepticons, Metroplex brought the powered-up axe down on Megatron's head while the latter was in a Cyber Key-enhanced Dark Claw Mode. This resulted in Megatron being smashed through the floor, and Nemesis Breaker being knocked against a wall so hard he disintegrated.

Curiously, others besides Metroplex are not only capable of wielding Sparkdrinker, but also using Metroplex's Cyber Key to power it up. Optimus Prime did so on three occasions, in spite of the fact that even his bulk was dwarfed by the giant weapon: once to drive off Galvatron, once to punish Ransack and Crumplezone for holding Jolt and Bud captive, and against Galvatron for a second time.

Sparkdrinker would be used against Galvatron one last time during the battle to reclaim the Omega Lock and Cyber Planet Keys from him. Optimus Prime and the other Autobot leaders summoned their Cyber Keys for extra power to bring the now-super giant Galvatron down. Saying, "I hope this stings a wee bit!" Metroplex hurled Sparkdrinker at Galvatron with all his might. It, along with a back-cannon blast from Prime, shots from Override's engine blaster, Evac's missiles, Scourge's flames collided painfully with Galvatron, decreasing his power and rendering him stunned and barely able to move.

Sparkdrinker forms the excavation equipment of Metroplex's vehicle mode.