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 2 damaging the Death Egg and knocking it out of orbit. Sonic falls to the ground and is saved by Tails in the Tornado. If the player has collected all of the Chaos Emeralds, Sonic, in his Super Sonic form, flies alongside it. "Sonic the Hedgehog 2" is a 2D side-scrolling platform game. The game stars Sonic the Hedgehog and his sidekick, Miles "Tails" Prower, who is described as having idolized Sonic as a child and wanting to keep up with him. At the game's start, the player can select to either play as Sonic, Tails, or both. The difference between