Miles "Tails" Prowler (Earth-6515)

"I've changed a lot since I started hanging out with Sonic, but I can't depend on him forever. I know I can do this by myself!"

- Tails

Miles "Tails" Prower is a Mutant fox created by Doctor Nitrus Brio to stop Sonic Hedgehog from collecting the seven Chaos Emeralds to power the Cortex Vortex. As a result of Brio's experiments, he was born with two tails, hence his nickname of "Tails". Deciding to become a hero much like Sonic and reject the evil intentions of Brio, Tails became Sonic's best friend and ally through his quest to protect the world.