In the past few months, we have covered a bunch of awesome educational robots. If you are looking for more than just a toy, you may want to give the HR-OS1 Humanoid Endoskeleton a look. It is an open source humanoid platform with an onboard Linux computer. It comes with 20 robot actuators, an Arbotix-Pro Robocontroller, Intel Edison, Raspberry Pi 2 CPU, webcam, 2200 mAh battery, and everything you need to get started.
You can 3D print an armor for the robot to further customize it. More information is available here.