Miles "Tails" Prower is a yellow two-tailed Fox hailing from a village on a distant planet who was deemed to be "strange" by his fellow villagers.

Following his notice of your energy surge that you had caused, he tracked his new idol to Earth and arrived on the planet through a ring.

Having noticed someone is in pursuit of you, Tails rescues you from Knuckles the Echidna, explaining his presence.

Everyone calls me ‘Tails’, you probably understand why.”