Metal Sonic could be the next major villain in Sonic 4 ... a Sonic-resembling robot created by Dr. Eggman. Introduced in 1993's Sonic CD, Metal Sonic is first seen kidnapping Amy Rose.

Now he’s building a large Sonic the Hedgehog self balancing robot that can bend at the knees and hip, allowing it to lean while turning and handle uneven terrain. Check out the first video ...

Emerl: A mysterious robot with a deep backstory tied to ancient Echidna clans, adding significant lore to the franchise universe. When thinking about characters from the Sonic the Hedgehog ...