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 (character) Keiko Utoku providing the voice. Sonic's first true voice actor was Takeshi Kusao for the arcade game "SegaSonic the Hedgehog", with Junichi Kanemaru continually voicing the role beginning with the release of Sonic Adventure. In "Sonic Unleashed", Sonic was voiced by Tomokazu Seki while in Werehog form. In English, Sonic was cast to Jason Griffith starting from "Sonic X". Griffith was later replaced by Roger Craig Smith, starting with "Sonic Free Riders" and "Sonic Colors" in November 2010. Actor Ben Schwartz will voice the character in the Paramount Pictures feature film, which is set for release on November 15, 2019.