Miles Prower (マイルス・パウアー, Mairusu Pauā?, lit. "Miles Pouer"), better known by his nickname, Tails (テイルス, Teirusu?), is one of the main characters in the anime series Sonic X and its comic series published by Archie Comics. He is a two-tailed fox from an unnamed world in a parallel dimension to Earth and Sonic the Hedgehog's best friend. He quickly befriends fellow inventor Chuck Thorndyke, who helps him build the X-Tornado jet-plane.