Sonic 4’s Secret Villain Is Hidden In Plain Sight According To Convincing Movie Theory

[هَـ-ђāŵĩ-ـَاوِيتم التحقق من هَـ-ђāŵĩ-ـَاوِي كعضو.]

A convincing theory about Sonic the Hedgehog 4 indicates a secret villain from the games is actually hiding in plain sight. Sonic the Hedgehog 3's post-credits scene laid the groundwork for the upcoming installment, confirming Metal Sonic will be the next big threat. It also introduced Amy Rose, a new ally with an important history with Sonic in the games.
Nick Bythrow

Sonic 4’s Secret Villain Is Hidden In Plain Sight According To Convincing Movie Theory

Sonic 4's hidden antagonist explained.

screenrant.com