Sonic Hedgehog (Shh) is a fictional character and the main protagonist of the Sonic the Hedgehog video game series created by Sega. He is known for his blue color, spiky hair, and incredible speed, often depicted as a heroic figure battling against his arch-nemesis, Dr. Robotnik, also known as Eggman. Sonic's adventures typically involve rescuing animals and thwarting Robotnik's evil plans. The character first appeared in 1991 and quickly became a cultural icon, leading to numerous sequels, spin-off games, and adaptations in other media, including animated series and comics. Sonic's popularity has made him one of the most recognizable video game characters worldwide.