Here's a breakdown of how he transforms in the movie:
The Construction:
* Multiple Constructicons: He is formed from several individual Constructicons. In the movie, we see:
* Scrapper: The yellow bulldozer.
* Bonecrusher: The massive purple excavator.
* Mixmaster: The cement mixer.
* Long Haul: The dump truck.
* Scavenger: The green front loader.
* Rampage: The monstrous yellow crane.
* Demolishor: The gray bulldozer.
* A Messy Process: Unlike other Transformers, Devastator's transformation is not sleek or easily deciphered. It's a chaotic merging of various vehicles with pieces haphazardly forming his body. He essentially "clumps" together rather than smoothly transitioning.
The Visuals:
* Practical Effects: The movie uses a mix of practical effects and CGI to bring Devastator to life. The core "Devastator" figure we see is a large-scale model, likely built from a combination of car parts and other materials.
* CGI Enhancements: CGI is used to fill in gaps, add details, and create the overall impression of the massive robot.
The Transformation in the Movie:
The actual transformation in the movie is very brief and happens quickly. It's not a step-by-step process, more of a "splat" as the Constructicons all come together to form Devastator.
In Conclusion:
Devastator's transformation in "Revenge of the Fallen" is more of a jumbled mess than a smooth, controlled process. This is likely due to the limitations of practical effects and the desire to present him as a powerful, chaotic force of destruction.