Caliburn (カリバーン Karibān) is a character that appears in the Sonic the Hedgehog series. He is a sapient, talking weapon and the legendary sacred sword who protects England in the world of Camelot from danger. He is also the one who decides who gets to be crowned the monarch of England. After playing a part in King Arthur's rise to kingship, only for Arthur to later become the tyrannical Black Knight, Caliburn became Sonic the Hedgehog's partner to stop to Arthur's reign of terror. Though their relationship came off to a rocky start, Caliburn taught Sonic what it meant to be a real knight, and together they stopped Arthur, followed by Merlina the Wizard.