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In Transformers: Energon, Superion was one of four guardians of the Super Energon pool on Cybertron, the other three being Dauntless Maximus, Constructicon Maximus, and Bruticus Maximus. The four went into stasis at an unknown time after meeting Omega Supreme, but Superion and the latter two were awakened after Megatron murdered Dauntless in order to access the pool. Constructicon and Bruticus soon joined forces with the Decepticon leader, but Superion refused and fled, eventually joined forces with Optimus Prime's Autobots. He would cross paths with his former comrades on several occasions, eventually facing the pair in a final battle. He succeeded in slaying Constructicon Maximus only to have his limbs disabled by Bruticus Maximus, and would have perished had it not been for the unexpected appearance of Dauntless' apparition. This intervention allowed Superion to commandeer Constructicon's limbs for his own use, and he launched a kamikaze attack on Bruticus that resulted in both their deaths.