The writers behind Sonic the Hedgehog 2, Pat Casey and Josh Miller, have now revealed the video game inspiration behind the upcoming threequel, Sonic the Hedgehog 3. Appearing at the Klamath Community College Comic Con 2022, Casey and Miller discussed the release of the hugely successful video game sequel, which hit screens last month, before revealing the source material they will turn to when bringing that surprise mid-credits character into the fray in a future installment.