Sonic the Hedgehog 2' End Credits Explained

With 'Sonic the Hedgehog 2' hitting theaters, fans have a lot of questions about the movie and the end-credits scene. What's the deal with Shadow the Hedgehog?

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Who would make an awesome post-credits scene, teasing a Fourth Sonic Movie? : r/SonicTheHedgehog

Sonic the Hedgehog End Credits Scene Explained: How the After Credits Scene Sets Up Sonic 2 - IGN

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