It refers to a romantic or close relationship between: Shadow the Hedgehog Amy Rose Fans of the pairing like to imagine a dynamic where Amy’s bubbly, persistent personality contrasts with Shadow’s stoic, brooding nature — the classic “sunshine × grump” trope. It’s not canon in any Sonic game, show, or comic, but like many ships, it developed in fanfiction, fan art, and fandom discussions because of the characters’ occasional interactions in games like Sonic Adventure 2,