The science behind Transformers' shape-changing robots

It’s been 15 years since the first live-action Transformers film hit theaters and introduced a new generation to the Autoboots and Decepticons. Whatever your feelings about the movie and the franchise that followed, there was almost universal praise at the time regarding the visual effects. Even a decade and a half on, the transformations from humanoid giant robot to vehicle are stunning to behold.

Transformers movies in order: Chronological and release

Transformers: Rise of the Intern - MSU Denver RED

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TRANSFORMERS LARGE ROBOT TRANSFORMERS

ROTB Wheeljack's Nerdy Redesign was a Demand from the Higher Ups - Transformers

When the transformers from the movie transform do they 'cheat' by just popping stuff out of nowhere or something or do they actually transform as they should? - Quora

Megatron, Transformers Movie Wiki

Transformers: The Last Knight' Is Two-and-a-Half Hours of Racist Robot Torture

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Hypothetically, how would someone create transforming robots or vehicles like the movie franchise Transformers? What tech? How long? What is needed? - Quora