In the past few months, we have covered plenty of cool robots from EZ-Robot. Their humanoid robots such as JD Humanoid are WiFi enabled and have motorized joints to walk, dance, and perform other skills you teach them. As it turns out, you use these bots with a 3D printed head to build your own Darth Vader robot.
Darth Jader is based on a modified JD with its body painted in black. You can find the 3d printable head and other info here.