Miles "Tails" Prower is the eight year old best friend of Sonic the Hedgehog, and sidekick. He first met him in the game Sonic the Hedgehog 2, and also incredibly smart. He can fly using his two tails, and has the Tornado as an aircraft. Tails, also has a Super Form. His transformation however, doesn't use the Chaos Emeralds. He has to use the Super Emeralds, instead.
Tails, as a main character is noted for the things he creates. For example, he created the fake Chaos Emerald for Sonic in Sonic Adventure 2. He's also noted for his ability to fly. Tails has appeared in every single Sonic game, prior to Sonic the Hedgehog 2. He can also swim, unlike Sonic, in Sonic the Hedgehog 3 (and Knuckles). He also likes Mint Candy.
Tails is mainly a humble, kind, and a good natured fox. He also seemed to be picked on for having two tails, which he now put to good use. Tails seems to have a fear of lightning in the Original Video Animation, Sonic the Movie, released in Japan in 1999. His evil counterpart is also thought by fans, Tails Doll, a doll created by Dr. Robotnik, also put in many Sonic Creepypastas. His main vehicles seen, are the Tornado, a plane used by Sonic and Tails, first seen in Sonic the Hedgehog 2, and the Cyclone, which is the equilvalent of Dr. Robotnik (now Dr. Eggman)'s mech used in both Sonic Adventure 2.
Tails has gotten lots of praise from Sonic fans, starting when he first appeared. However, he has also been critcized for sounding too much like a female. Other then that, he has gotten lots of positive feedback, and is really well known through the blue blur's history.