Sonic the Hedgehog 3 doesn't hit theatres until December 20 but spoilers have already leaked online, including of its end credits scene which sets up a fourth film.

In an exclusive interview, Sonic the Hedgehog director reveals why some fan-favorite characters don't appear in the upcoming film.

In the scene leaked by 4chan, Sonic gets confronted by Metal Sonic. The leaked scene lacks volume, so it’s hard to tell what is going on, but multiple Metal Sonics appear, surround Sonic, and begin to ...