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Quotation1.svg Hmph! The impertinent one is you, knave! Brace yourself, for I shall train you until you are worthy! Quotation2.svg
— Caliburn, Sonic and the Black Knight

Caliburn (カリバーン Karibān?) is one of the main characters in Sonic 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.

Concept and creation

Shiro Maekawa originally wrote Caliburn to be a female. However, fellow workers were confused by his writing and had believed the character to be male. Following this, Maekawa later found out the gender of Caliburn was changed.[4]


Caliburn is a sentimental long sword with a double-edged silvery blade and a lighter edge. His guard was a gold circle with two small gold protuberances or 'wings' on the sides of a pulled back gold spiked cross-guard with a red semi-circle at the curved bottom as a gold ornate ornamentation (Which can move downwards to reveal his mouth and two, stern, sea foam-green eyes) is under red semi-circle part of the cross-guard while the grip itself is white and thin, with a golden decorated top and a pointy sword pommel.



A young Arthur pulling out Caliburn.

Many years ago, Caliburn was placed in a stone by Merlin, who claimed that only the true king of England would be able to pull Caliburn out of it. None were able to pull Caliburn free of the stone, until a young Arthur came and accomplished this miraculous feat. This act made him the ruler of all England.[5]

Presumably, though contradictory, Caliburn was once a piece of Excalibur. However, when King Arthur's corruption, caused by the Scabbard of Excalibur, extinguished Excalibur's light, it split into Caliburn and the three other sacred swords. Under unknown circumstances, Caliburn was then placed in stone and came to rest in Misty Lake for a long time.

Sonic and the Black Knight

Caliburn, with Sonic the Hedgehog.

At the end of the second mission, Sonic pulls out Caliburn. To his surprise, he finds the sword has a mind of its own and can talk. Caliburn doesn't approve of Sonic initially, calling him a "Knave" at first. Sonic likewise didn't get along with Caliburn, calling him an "oversized letter opener" and mocking him at most any chance he got. But the two begin to work together over time. He sticks by Sonic's side throughout the entire game and joins him in battling monsters and the Knights of the Round Table. By the time Sonic defeated Sir Percival, Caliburn "accepts" Sonic and dubs him Sir Sonic, Knight of the Wind. During Sonic's final battle with the recently revealed antagonist Merlina, Caliburn is broken in half by her vicious attacks. Sonic's determination restores Caliburn, transforming him into the legendary Excalibur and transforms Sonic into Excalibur Sonic. They work together and defeat the Dark Queen, the final boss.

In the end, Caliburn reveals that he is the one to decide who receives the crown. The Royal Knights are shocked to realize that this means Sonic himself was the true King Arthur the entire time.

Other game appearances

Sonic Runners

Caliburn in Sonic Runners.

Caliburn appears in Sonic Runners as a S Rare Buddy, allowing the player's character to perform slash attacks in boss fights.[1]


Caliburn acts like a proper and polite gentleman and has proud manners, which initially clashes with Sonic's easy-going attitude. He is also shown to slightly have the personality of a strict teacher, usually calling Sonic a fool when he does something that Caliburn disapproves of or disagrees with and is soft on compliments.[3]

Powers and abilities

Caliburn has a cutting edge sharp enough to cut through rock, albeit with some effort. During his stay at Misty Lake, his blade grew blunt, but he since 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.


Main article: Excalibur


Excalibur is a transformation of Caliburn and is, according to Caliburn, his true power. However, this form and its power were locked away following King Arthur's descend.[6] He seemingly regained this form and its powers thanks to Sonic's willpower during their battle with the Dark Queen. In this state, Calburn can cut through anything, repel magic and form an all-piercing energy meteor with Excalibur Sonic.


  • You are the chosen one!? You are but a squire!
  • We must ask the scabbard's former owner how to hinder its power.
  • You shall see for yourself. Onward, my young Knave.
  • Very well then, I shall call you Knave the Hedgehog.
  • Hmmm... I suppose something must be done about this.
  • My edge has grown blunt. Being in that rock for so long has taken its toll.
  • He is no knight. At least not yet.
  • Fool! A knight never flees his foe!
  • He is Knave the Hedgehog, and he accepts your challenge!
  • Such sympathy is an insult to a knight.
  • That is Arondight one of the sacred swords of this land. Take good care of it.
  • Please try not to make a mess!
  • Never underestimate your opponent. Especially when it's a dragon.
  • A worthy adversary.
  • Well done.
  • Hm. Actually... Sonic the Hedgehog... You have mastered the code of chivalry. From this day forth, you shall be Sir Sonic, Knight of the Wind.
  • Onward Sonic, Knight of the Wind!
  • (Defending Sonic from one of Merlina's attacks) You fool! A knight must always be on his guard.
  • Have you forgotten who I am? I am the Sacred Sword, Caliburn. I am the one who decides who's worthy of the crown.


  • Caliburn's English voice actor, Casey Robertson, also voiced the first-level nightmaren Reala from NiGHTS: Journey of Dreams.
  • Caliburn is what the real Excalibur was called before the name was altered by European authors, which is referenced as the missing Excalibur turns out to be Caliburn.
  • Sonic's finding of Caliburn references the way Arthur became King, which is probably because Sonic is technically King Arthur.
  • Caliburn's breaking in defense of Sonic echoes the sacrifice made by Shahra at the end of Sonic and the Secret Rings.
    • It may also be a reference to the stories where King Arthur gained Excalibur after his sword was cut in half during a battle.
  • In cutscenes, the ornament that attaches the middle of the hilt to the blade slides down and is replaced by Caliburn's face.
  • Caliburn is the only character in Sonic and the Black Knight whose mouth moves when speaking in non-3D cutscenes.
  • Caliburn is the only inorganic, non-mechanical character to have a transformation.
  • Outside the Sonic series, Caliburn appears as the weapon for the Sonic skin used by the Felynes in Capcom's Monster Hunter 4 Ultimate.[7]


  1. 1.0 1.1 Sega. Sonic Runners. Sega. Retrieved on 20 February 2015.
  2. Sonic Team (March 13, 2009). Sonic and the Black Knight. Nintendo Wii. Gallery. Vault 2. [Sacred Sword Caliburn] "The legendary sword Caliburn, protects the kingdom from danger. Amazingly, it also talks."
  3. 3.0 3.1 Sonic Team (March 13, 2009). Sonic and the Black Knight. Nintendo Wii. Gallery. Vault 5. [Caliburn] "The sacred sword is Sonic's partner. He is soft on compliments. He teaches Sonic what it means to be a real Knight! Caliburn is actually the sword that King Arthur drew from the stone. That miraculous action made him the King of all England!"
  4. The Supreme Topic of 'Other' Knowledge. Windii. Sonic Retro (23 June 2018). Retrieved on 23 June 2018.
  5. Sonic Team (March 13, 2009). Sonic and the Black Knight. Nintendo Wii. Gallery. Vault 5. [Legendary Sword] "Merlin placed the sword in the stone claiming that none but the true King could pull it out. None were able to pull the sword free except Arthur. That act made him the King of all England."
  6. Sonic Team (March 13, 2009). Sonic and the Black Knight. Nintendo Wii. Gallery. Vault 8. [Caliburn]. Voiceover 1 "I am Caliburn, the sacred sword of legend. My true power lies locked away, due to the incompetence of the one who wields me. I have a bad feeling about this."

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