Miles "Tails" Prower is a character created by Japanese game designer Yasushi Yamaguchi. Part of Sega's Sonic the Hedgehog franchise, he is the first character to consistently appear by Sonic's side in the series, appearing in nearly every mainline and spin-off game since his debut.

Sonic had recently lost his friends from a little argument. He feels as if nothing can cheer him up now. He's got dark circles under his eyes and he's bleeding from self harm. Can you cheer him up? (your shadow btw)

Essentially a dark version of Sonic, Shadow can match him in both speed and skill, and can use Chaos Control with a Chaos Emerald to warp time and space. While preferring to work alone and not one of his closest friends, he has helped Sonic and his allies when needed.