WARNING! Spoilers for Transformers #13Megatron just showed off his alt-mode in the Energon Universe, and Transformers fans should be happy at the revelation. Megatron was teased throughout the first arc of the new series, until it was revealed he had been imprisoned by the hidden society of Cobra-La. Megatron broke free in last summers Energon Universe special, although fans havent gotten to see him transform in the new continuity, leading to much speculation as to what his alt-mode would be.