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 music to the series. For example, Bowling for Soup lead singer Jaret Reddick performed the main theme of "Sonic Unleashed", "Endless Possibilities"; and former Megadeth guitarist Marty Friedman played on "With Me", the final boss theme for "Sonic and the Black Knight". Cash Cash lead singer Jean-Paul Makhlouf performed the opening theme to "Sonic Colors", "Reach for the Stars", as well as the ending theme, "Speak With Your Heart". Hoobastank frontman Doug Robb performed and wrote the lyrics to the main theme of "Sonic Forces", "Fist Bump". DIC Entertainment's "Adventures of Sonic the Hedgehog" is an American animated television series