Miles Prower was born on West Side Island with a genetic abnormality that gave him a pair of tails. This trait earned him the nickname "Tails" and made him a frequent target of bullying. Tails' life took a positive turn when he met Sonic the Hedgehog, who had set up camp on West Side Island while adventuring. He idolized Sonic for his positive attitude and followed him around the island when the hedgehog resolved to thwart Doctor Eggman's plan to gather the seven Chaos Emeralds. He proved a valuable partner, helping Sonic reach Eggman's Death Egg and defeat the doctor there.