Size Transformers toys can be as small as three-inch figurines or over 12 inches as full-size, fully functioning models. The most common size is around six inches tall.

Walter Mueller knows his Transformers. The 32-year-old has been collecting the robot toys for more than 20 years. He even has one of the brand's main characters, Optimus Prime, tattooed in full ...

Both figures feature deco and details based on the worlds of Transformers and G.I. Joe. Includes fusion cannon, backpack, and weapon accessories. Accurate scale to the 1983 H.I.S.S. Tank toy.

Robosen and Hasbro are announcing the Transformers Grimlock Auto-Converting Robot, a successor to their Optimus Prime toy that can transform itself. It’ll start at $1,500 this fall, but that’s ...

The toy can transform from the classic Time Machine to a Robot in 17 steps. Once the Transformer is transformed into a Robot, it'll stand approximately 5.5-inches tall.

Possibly inspired by the work of Kenji Ishida, Takara Tomy unveiled a self-transforming Transformers robot toy at Tokyo Toy Show 2013 that could be headed for mass production.

This is not Robosen Robotics’ first Transformers-esque robo-build. The team spent nearly 11 years working on robots with a construction similar to bots that populate the cartoon/toy franchise.