a tail

The famous two tailed fox sidekick of Sonic in almost every Sonic the Hedgehog game since Sonic 2 for Genesis. He is a kind hearted fox who can fly for a few seconds by swinging his two tails back and forth very fast and use his tails to accellerate himself to very fast speed when running. He is extremely skilled with machanics, about as skilled, if not more skilled, than Dr. Ivo "Eggman" Robotnik.Some stories say that Tails was abandoned by his parents for some unknown reason as a very young child, which then he became an orphan that was made fun of by the other Mobian children for his two tailed deformity. But he eventually learned how to use his deformity to his advantage by using them to fly and accellerate when he runs. He eventually ran into Sonic and followed him. At first Sonic found Tails to be annoying and tryed to run past him but eventually, to his supprise, he found Tails catching up to him. They eventually got to know each other and have been friends ever sence.