Sir Gawain is a character that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. He is a Mobian echidna and the alternate counterpart of Knuckles the Echidna from an alternate universe. He serves as a knight in the service of King Arthur alongside the Knights of the Round Table.
As Gawain and the Knights of the Round Table saw King Arthur lose Sonic the Hedgehog and Merlina, the trio of knights were ordered by Arthur to search for Merlina and Sonic and slay them. After Arthur left, Gawain voiced his objections to their orders, as Merlina was the royal wizard. Lancelot and Percial, however, reminded him of the importance of obeying their king, and Gawain went on his mission.
A strong believer in honor, Sir Gawain is devoted to his duty of serving King Arthur. At the same time though, his loyalty to his duty is not unshakable as he would question his king's amoral orders.
- Though Gawain's name was never stated in the comic, Ian Flynn confirmed all the characters' names from the comic strip to be the same as in Sonic and the Black Knight.