Giant Galvatron

Giant Galvatron was a massive drone built by the Cult of Galvatron to kill Megatron and use his energy to resurrect the real Galvatron.

It didn't work out so well for them.

History
In July Megatron did battle with the Cult of Galvatron, personally killing cult leader Obsidian and dealing the final blow that toppled Super Galvatron.