Knuckles the Echidna is a character from Sega's Sonic the Hedgehog series. He is a red anthropomorphic short-beaked echidna who is Sonic's best friend and former rival. Determined and serious, but sometimes gullible, he punches enemies. In the games and media, Knuckles is independent, headstrong, devoted to his duty and slightly gullible. He is very serious and usually likes to be by himself, but can be relied upon to help out whenever the world is in danger. 