At the start Super Sonic was no more than an enraged Sonic, a Sonic who lost all of his responsibilities and just lived for the moment. He took pleasure in destroying whatever was in front of him, luckily for the world that was usually whatever Sonic was fighting, however there were some close calls where Super Sonic nearly killed innocent people. When he turned on his friends Amy managed to banish Super to the Special Zone and Sonic was split from him, however that didn’t kill Super Sonic who was free to do what he liked in the special zone. So Sonic followed him and they fought, eventually managing to imprison Super Sonic in the Omni Viewer and stopping time. Even that was useless as Super realised what was happening and began to heat himself up, burning out the omni viewer and causing an enormous Electromagnetic Pulse. Sonic returned him to Mobius and used the pulse to destroy Robotnik’s empire. Doing that reduced Super of all of his memories and powers and he wandered the streets as a lost child. Eventually he found resident magicians Ebony and Pyjamas and lived peacefully with them for a time. However he soon began to age and die, forced to hunt down the Chaos Emeralds to recharge. When he absorbed all of Chaos’ energy he regained his powers and became a demon again, fighting Sonic to destroy the planet. Ebony used her magic to help Sonic but the hedgehog began to whither and die. Gloating Super Sonic prepared to kill them all when suddenly he returned to normal; Ebony hadn't hit the wrong hedgehog with her spell after all. Sonic was back, and he was here to stay this time.

Tails seemed to have been abondened after his parents were roboticized as a little kid, but even as a baby he was fond of Sonic and has hung out with Sonic, Sally, Rotor and Antoine from a very young age. His two tails have been of invaluable assistance to the Freedom Fighters as well. Tails Idolizes Sonic and wants to be like him. He's also committed to his cause and gets very determined to do his job when he takes part in missions, resulting in an extreme bravery.

When infused with enough Chaos Energy, Tails has the ability to become Turbo Tails. As Turbo Tails, all of his natural abilities are enhanced. He is also invincible to all attacks, and glows a dark orange color.

On one of his earliest solo adventures, Tails learend that he was the Chosen One who would bring about the Great Harmony. Although, as the Chosen one, Tails has defeated Master Mogul and saved the multiverse, it is possible that there will be more surprises in store for him.

Tails is a member of the "Brain Trust" subdivision of the Freedom Fighters but also joins the combat team on occasion. Currently, he is not on speaking terms with Sonic after finding out that Sonic was dating his crush, Fiona Fox.