Tails

Miles Prower (マイルス・パウアー, Mairusu Pauā?), better known as Tails (テイルス, Teirusu?), is a character that appears in the Sonic the Hedgehog series. He is an anthropomorphic two-tailed fox cub and Sonic's best friend and sidekick who was born on West Side Island. He can use his tails like helicopter rotors to fly and has a remarkable IQ with excellent mechanical engineering skills. Since they met, Tails has accompanied Sonic in his adventures to thwart their nemesis, Dr. Eggman.