Metal Sonic’s debut in Sonic the Hedgehog 3 directly set up Sonic the Hedgehog 4, but it also created a major problem for the villain in the process. Sonic the Hedgehog 3‘s post-credits scene continued the franchise’s tradition of introducing new characters from the video games. This time, it was Metal Sonic and Amy Rose who became part of the movie franchise as a result of the mid-credits scene. It showed Sonic accidentally running to New York, encountering an army of Metal Sonic robots, and then being saved by Amy Rose in the coolest introduction of the entire franchise.
