Galvatron

A malicious, destructive Destron (Decepticon) leader serving Unicron, born from what remained of Megatron following his final fight with Convoy.
Revealing himself during Starscream's coronation, he soon takes over as the faction's leader and doubles down on his predecessor's plans of universe-wide domination - however, he is noted to be noticeably more deranged, neurotic and unpredictable than Megatron ever was, making him noticeably less liked among his troops, with the exception of his most loyal subordinate, Cyclonus, who follows him no matter how much abuse he takes.

His alternate mode is a futuristic cannon.

At times, he is confused with his alternate reality doppelganger, Galvatron II.