Sonic the Hedgehog protagonist Sonic the Hedgehog, a blue hedgehog able to run at supersonic speeds, and recurring villain Dr. Eggman, an evil scientist whose ambition is to conquer the world. Among Sonic's many allies, the most well-known include: Miles "Tails" Prower, a twin-tailed, highly intelligent yellow fox who is Sonic's sidekick and best friend; Amy Rose, a pink hedgehog who is Sonic's self-proclaimed girlfriend and a hero in her own right; Knuckles the Echidna, a coolheaded red echidna who is the guardian of the Master Emerald; Shadow the Hedgehog, an anti-heroic doppelgänger of Sonic with a dark past; and Metal Sonic, a
Sonic the Hedgehog (TV series) wipe out his enemies. The Freedom Fighters launch a full scale assault against Robotnik, Sonic and Sally destroying the Doomsday Project with the power of the Deep Power Stones. Robotnik vanishes, and the Freedom Fighters declare victory, with Sonic and Sally kissing. In a final scene, Snively becomes the main antagonist, accompanied by an unseen ally with red eyes. Ben Hurst, one of the series' writers, confirmed the figure was Naugus. The Saturday morning series differs from the weekly "Adventures of Sonic the Hedgehog", which premiered the same month. While "Adventures" is lighthearted and comical, "Sonic the Hedgehog" featured a