Using Unicron, Megatron has discovered a powerful source of energy: Super Energon. By immersing himself in the liquid, he is transformed into Galvatron, with a new purple armor which makes him impervious to all forms of firepower. However, he awakens the guardians of the energon, who chose to join him- Constructicon and Bruticus Maximus. However, the third guardian- Superion Maximus, escapes, so he sends his new minions after him.
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