Here's Why Metal Sonic Appearing in 'Sonic the Hedgehog 3' Creates a Big Problem for 'Sonic 4'

Sonic the Hedgehog 3was a critical and commercial success. The outstanding sequel exceeded its already high expectations, becoming the first Sonic movie to scorea Certified Fresh rating by critics at Rotten Tomatoes. It's alsothe highest-grossing filmin the franchise to date, making$491 million at the worldwide box office. All accolades aside, the best might be yet to come with the already announcedSonic the Hedgehog 4.The mid-credits scene ofSonic 3had fans roaring in theaters and raring to go forSonic 4. The scene features the introduction of Amy Rose, a lady hedgehog who saves Sonic (Ben Schwartz) from a group of evil foes: Metal Sonic! However, that potentially creates a major problem forSonic 4, andit's time to unpack a possible issue for the upcoming sequel.