Sonic the Hedgehog trademarked Sonic The Hedgehog, is the protagonist of the series. Developed as a replacement for their existing Alex Kidd mascot, as well as Sega's response to Mario, his first appearance was in the first game of the Sonic series, Sonic the Hedgehog, for the Mega Drive, also known as the Genesis in North America. Sonic's greatest ability is his running speed, and he is known as the world's fastest hedgehog. Using the power of the 7 Chaos Emeralds, he can become Super Sonic, and achieve even greater speeds.
