Miles Prower (マイルス・パウアー Mairusu Pauā), more commonly known by his nickname Tails (テイルス Teirusu), is a video game character in the seriesSonic the Hedgehog released by Sega. He also appears in comic books, cartoons, as well as a two episode OVA.
The name "Miles Prower" is a pun on "miles per hour", a reference to the famed speed of Sonic the Hedgehog. He is an 8 year-old fox with two tails, hence the nickname. He is known to be Sonic's sidekick and best friend, as well as a mechanical genius. He is able to use his two tails to propel himself into the air like a helicopter for a limited time. He debuted on October 16, 1992 with the release of the Sonic the Hedgehog 28-bit version of ; the 16-bit version was released that November.