Miles "Tails" Prower

Miles Prower (Japanese: マイルス パウアー, Hepburn: Mairusu Pauā), better known by his nickname Tails (テイルス, Teirusu), is a fictional character of Sega's Sonic the Hedgehog series. Tails also appears in his own spin-off series, comic books, cartoons, and films. He is the second character to consistently appear by Sonic's side in the series. The name "Miles Prower" is a punon "miles per hour", a reference to the famed speed of Sonic the Hedgehog. He is a two-tailed fox, hence the nickname.
A mechanical genius and skilled pilot, he can fly by spinning his tails like a helicopter rotor and can be seen flying in multiple games and TV shows created by Sega. He debuted in November 1992 with the release of Sonic the Hedgehog 2. In the mid-1990s, He was featured as the main character in a number of spinoff games: Tails and the Music Maker for the Sega Pico, and Tails Adventure and Tails' Skypatrol for the Game Gear. Tails was rated the third-most-popular character in the franchise, behind Sonic and Shadow, in an official poll from Sega in 2009.