Brave Robotics, a Japanese company has brought the Transformers to the real world with their 1/12 scale Transform Robot Version 7.2.
These limited production robots are not easy to make or cheap to buy. It takes about one month to make one model, which comes with a wirelessly remote-controlled Transform Robot and includes wireless internet connected cameras for remote monitoring, and the ability to steer its arms and shoot little plastic darts from them.
The robots come in serial numbered boxes and cost ¥1,980,000 JPY (about $24,000 USD). The concept itself took 10 years to design and the robots are made using a custom 3D printer created by the designer himself. Check out a video of the Transform Robot in action: