Ten years after Megatron was destroyed, the badly wounded Unicron- unable to dimension jump- used his body and spark to create Galvatron whos duty was to collect energon for Unicron so he could return to power. Implanting a cerebro shell in his spark, Galvatron was seemingly loyal to Unicron. However with Unicrons psychic connection weakened Galvatron eventually redeveloped his old personality of Megatron, and took over the decepticons. Weakness: Asides from his arrogance, Galvatron has no known weakness.