Sonic the Hedgehog is the main protagonist of the Sonic the Hedgehog series, a franchise created by Sega. He is a blue anthropomorphic hedgehog known for his incredible speed and agility. Sonic is characterized by his laid-back demeanor, adventurous spirit, and unwavering determination to stop the evil Dr. Eggman from achieving world domination. Throughout the series, he is often accompanied by his friends, including Tails and Knuckles, as they fight to protect their world. Sonic's iconic personality and abilities have made him a beloved character in gaming and pop culture.