Tails

Miles "Tails" Prower (テイルス) is a fictional character in Sega's Sonic the Hedgehog series, and the title character's best friend and sidekick. Tails also appears in his own spin-off series as "Two Tails" in comic books, cartoons, as well as in an OVA: Sonic the Hedgehog (OVA). He is the second character to consistently appear by Sonic's side in the series.