Sonic is a blue anthropomorphic hedgehog and the main character of the Sonic the Hedgehog video game series created by Sega. Known for his incredible speed, Sonic battles against his arch-nemesis, Dr. Robotnik, to save his friends and protect the world from evil forces. Since his debut in 1991, Sonic has become a cultural icon, appearing in numerous games, animated series, and even feature films. His adventures often involve collecting Chaos Emeralds and thwarting the plans of villains, making him a beloved character among fans of all ages.