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 Pocket Adventure "Sonic the Hedgehog" games for the Sega Genesis. The game is heavily based on "Sonic the Hedgehog 2" (1992) for the Genesis, while also using concepts from "Sonic the Hedgehog" (1991) and "Sonic the Hedgehog 3" (1994). "Sonic 2"'s stage themes are featured throughout, but the stage layouts are unique to the game. The bonus stages are also borrowed from "Sonic 2". "AllGame" called the game "a slightly dumbed down port" of "Sonic 2" and "Official Dreamcast Magazine" called it "essentially an adaptation of "Sonic 2."" Unlike "Sonic 2", "Sonic Pocket Adventure" features some exclusive modes. The game includes a