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Warning! This page contains spoilers for The Ship of the Dead.

Mallory's serrated knives are the primary weapons that Mallory Keen uses that was given to her from her mother, Frigg, who was in the disguised as a hag.


Magnus Chase first sees Mallory with her serrated knife in the twelfth chapter of The Sword of Summer. She was seen shaking the weapon in front of X.

In chapter eighteen of the same book, Halfborn tells Mallory to shut up and she reaches for her knife, most likely to threaten the berserker.

Although not clearly stated in the beginning of The Hammer of Thor, it can be said that the knives Mallory uses to fight the lindworms at Valhalla are her serrated knives. The same can be said for the scene where Mallory helps fight the giants at the wedding.

In The Ship of the Dead, it is revealed that Mallory was given the knives by her mother Frigg (who was disguised as a hag) during what would become known as "Bloody Friday" in Belfast in 1972 so she would go to Valhalla (due to having weapons in her hands) after Mallory dies disarming a car bomb Loki tricked her to set.


  • Is currently unknown of what the knives are made out. 
    • Althought the knives are possibly made out of Bone Steel, but curiously this is not mentioned.
    • Is unknown if the knives could been made of Adamantine, a Greek Magical metal who is also said to be indestructible.
Personal Weapons: Riptide | Annabeth's Knife | Backbiter | Frank's Spear | Hazel's Spatha | Katoptris | Nico's Sword | Thalia's Spear | Aegis | Maimer | Kronos' Scythe | Ivlivs | Master Bolt | Poseidon's Trident | Sword of Hades | Reyna's Spear | Hades' Staff | Juno's Gladius | Annabeth's Sword | Sumarbrander | Gungnir | Gjallar | Mjølnir | Thor's Staff | Khopesh | Mallory's Serrated Knife | Meg's Twin Imperial Gold siccae blades | Caduceus | Apollo's Golden Bow | Artemis' Knives | Ares' Sword | Ares' Shield | Thyrsus | Hecate's Torches | Minotaur's Axe | Leroy's Sword | Tyson's Javelin
Magical Items: Annabeth's Yankees Cap | Helm of Darkness | Keys of Hades | Flying Chariot | Golden Apple | Apples of Immortality | Greek Fire | Hermes' Multivitamins | Leo's Magical Toolbelt | Nectar and Ambrosia | Pandora's Pithos | Winged Shoes | The Golden Fleece | Stygian Ice Whistle | Arrow of Dodona | Serapis' Staff | Magic 8 Ball | Arrow of Dodona | Pig Ball | Mechanical Spider | Angel Statues | Athena Parthenos | Chiron's Wheelchair | Diocletian's Scepter | Flaming Dodgeball | Gleipnir | Poseidon's Pearls | Queen Hippolyta's Belt
Spoils of War: The Minotaur's Horn | Medusa's Head | Kampê's Scimitars | Nemean Lion's Pelt | Gorgon Blood | Cornucopia | Lydian Drakon Hide | Phineas' Robe and Slippers
Items: Camp Necklace | Chameleon Armor | Daedalus' Laptop | Golden drachma | Denarius | Red Gold | Mark of Athena | The Pax | Video Shield | Wristwatch Shield | Golden Mango | Sibylline Books | Pillow Pet
Blessed Metals: Celestial Bronze | Imperial Gold | Stygian Iron | Bone Steel