Caliburn (カリバーン Karibān?) is one of the main characters inSonic and the Black Knight. He is a sentient talking weapon and the legendary sacred sword who protects England in the world of Camelot from danger.[2] He is the one who decides who is to be the monarch of the lands ruled by King Arthur.

Following King Arthur's corruption into 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 provided Sonic with the guidance and knowledge needed to be a true knight,[3] and together they stopped Arthur and afterwards Merlina the Wizard.

Powers and a

Caliburn has a sharp cutting edge that allows him to cut through even rock, though with some effort. Over time in Misty Lake, his blade grew blunt, but he regained its edge thanks to the Blacksmith. As a sacred sword, Caliburn possess magical properties, though the full range of them are unclear. He can dispel the immortality granted by the scabbard of Excalibur when combined with the other sacred swords and activate the barrier stones. He is also capable of levitation, allowing him to move around on his own.

Caliburn possesses extensive knowledge in the art of swordsmanship. He is also skilled at teaching swordsmanship, as he was able to teach Sonic enough skills to go head-to-head with the Knights of the Round Table, who are all masters in swordplay, in a manner of days.