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Demon-Killing Knife

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Demon-Killing Knife (Ruby's Knife)
Demon Killing Knife
Manufacturer
Unclear
Use
To kill demons
Powers
Can kill demons
Location/Status
Presumably with the Winchesters


A knife of unknown origin, the Demon-Killing Knife/Ruby's Knife was first seen with Ruby in "The Magnificent Seven." The Winchester brothers gained control of the knife and are in current possession of it. Meg and Castiel have also been known to make frequent use of this blade. Since its introduction, the knife has become one of the Winchesters' most common means of killing demons.

Powers

DeanGanksDemon

Dean uses Ruby's knife to gank this demon.

This knife is capable of killing lesser demons, however it apparently cannot kill the more powerful demons, though Crowley, the King of Hell, was fidgety in its presence, as was Lilith.

The demon Alastair survived being stabbed by the knife, but implies that if he was stabbed directly through the heart with it, he would die. Seconds later, Castiel telekinetically moved the knife down towards his heart, but all this did was cause Alastair more pain him, suggesting he was truly immune.

The knife is also capable of harming the Horsemen War, Famine, and Pestilence.

Immunity

Alastair is the only demon to date to be shown immune to the blade, although it is unknown if Azazel or Lilith would be immune too, as they both seem to be more powerful than him. However, Lilith is shown to be frightened of the knife when Sam threatens her with it, so it is possible the knife could kill or at least harm her. However, as Alastair is her subordinate and that the knife's origin is probably unknown to demons (as Alastair was unfamiliar with the design) it most likely cannot harm her but she wouldn't risk it as it would mean she would be unable to break the final seal.

Appearance

KnifeSymbols

The symbols adorning the blade.

At first glance, the knife appears to be an ordinary hunting knife with a curved, serrated-edged blade and a wooden handle. However, upon closer inspection, symbols can be seen engraved along the blade.

Trivia

  • A deleted scene from Frontierland shows Samuel Colt in possession of the knife. Therefore, he may have invented it, just as he invented the Colt.
  • In the novel War of the Sons, Abbadon calls it a "cursed knife" and merely laughs when the Winchesters threaten him with it.

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