Now, I know The Time Portal part does sound a bit confusing. But, Allow me to explain. Now through all my previous theories. I thought, Megatron and Galvatron were separate being's. But now, It's bigger then that. If they truly do introduce the portal I'm suggesting. Then perhaps, Optimus and his team, Went back in time in order to achieve a sacred relic, To revive Cybertron, As JoBlo said, "Optimus Prime return to Cybertron to find the planet dead, and learns he’s the one to blame for it. To bring it back to life he’ll need a mysterious artifact that we hope you’re sitting down is on Earth. The artifact is connected to Merlin, the sorcerer mentor to King Arthur in the legendary story. Merlin gained his magic through a visiting Transformer, not the first time the race has dabbled in altering human history" What would happen, If Megatron from the past, Discovered he perished in the future. And this also include's all the decepticon's whom died in the future. Let's say Optimus and his team return to the present, Because they achieved what they needed. And Megatron followed them through the portal and at that moment on, He worked alongside with the Megatron, Which in the present is Galvatron. Opinions?. Previous Theories Transformers Theory | Galvatron's Unique Power's Transformers Theory | Galvatron & Megatron Transformers Theory | Will Optimus lose his insanity? Transformers Theory | Megatron's Return Transformers Theory | Galvatron Is an Clone.