Metal Sonic is the robotic rival of Sonic the Hedgehog, created by Dr. Eggman to match the blue hedgehog's speed and surpass him. He first appeared in Sonic CD in 1993 and has since returned as a recurring villain, including in his powerful Metal Overlord form. Fans recognise him instantly for his cold confidence and his obsession with proving he is superior to the original. That rivalry has kept lines like this popular in gaming edits, versus videos and memes about imposters, doubles and evil twins.