Possibly organic in nature, The Creators possessed a pale, grayish-pink skin color and metal framing grafted into their arms and wrists. Transformers: Age of Extinction
These beings traveled the galaxy in vast fleets of ships in search of organic planets. When they found one, specifically Earth, they Cyberformed the planet with machines called "Seeds", with no regard for present life there. Thus, the dominant life forms of the time, the dinosaurs, became extinct. Transformers: Age of Extinction
The bounty hunter Lockdown was hired by The Creators to hunt down Optimus Prime and return him to them. After Lockdown's defeat, Optimus left Earth in search of these mysterious beings. Transformers: Age of Extinction