Tails the Fox

Miles Prower (マイルス・パウアー Mairusu Pauā?), better known by his nickname, Tails (テイルス Teirusu?) , is a fictional character from the Sonic the Hegdehog series. He is an anthropomorphic eight-year-old fox cub born exclusively with two twin-tails, hence his nickname. Because of his abnormality, Tails was the subject of bullying during his youth. One day however, he met Sonic the Hedgehog and was inspired to become as cool as him after seeing him run like the wind. Tails soon after began following Sonic on his adventures and has since become his best friend and sidekick. He is able to use his twin-tails to fly by rotating them like helicopter rotors and is a mechanic genius and aerial pilot.

PewDiePie also was disguised as Tails in Episode Two of the The Chysilis Chonicles.