Knuckles the Echidna is a fictional, anthropomorphic red echidna with a white crescent symbol on his chest from the Sonic the Hedgehog series. Both physically powerful and highly resilient, Knuckles is the last guardian of the Master Emerald, a powerful ancient relic which is his solemn duty to protect from anyone who wants to steal it. For a long time, he was thought to be the last of the echidna race, until the Nocturnus Clan was revealed to still be active.

• Sonic_(Series)
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