Sonic the Hedgehog is a fictional character created by Japanese video game developer and publisher Sega. He is a blue hedgehog who can run at supersonic speeds, hence his name. Sonic is the main protagonist of the Sonic the Hedgehog video game series, and he has appeared in over 70 games since his debut in 1991. Sonic's running ability is one of his most defining characteristics. He can run at speeds of up to Mach 1, or the speed of sound. This allows him to easily outrun his enemies and obstacles. Sonic's running ability is also a source of his power. A fanart Sonic the Hedgehog progress bar for YouTube with Sonic Running.