For the Neutral and True Pacifist Route counterpart and the item found at the beginning of the game, see Toy Knife and Worn Dagger.

The Real Knife is a weapon item found in Asgore's Home. Plot-wise, it is the Worn Dagger as seen through the lens of a Genocide Route. Its defensive counterpart is The Locket. It is the Genocide Route weapon item associated with the First Human, and is implied to belong to them.

Its existence is foreshadowed in the Ruins near the beginning of the Genocide Route, with the first instance of the route's red text.[1] Name-wise, it contrasts with the Toy Knife found in the Ruins.


  • If the Real Knife is hacked into the inventory on a non-Genocide Route and is equipped, most monsters can be spared on the first turn (even most non-spareable monsters), noting that the monsters fear the hostile nature of the weapon.
  • The Real Knife could possibly be a reference to Mother 3's Real Bat, since both weapons are found before the final battle and wielded by someone before the protagonist.
  • The existence of this item may be a reference to a rumor from the Undertale Demo, which stated that in contrast to the Toy Knife (which is obtainable normally in the demo and the final game in the same place), a Real Knife was supposedly able to be found somewhere depending on the protagonist's actions. The item's Steam Badge description, "A symbol of the bond between player and character.", makes a callback to this rumor.
    • Within the context of the final game, this bond may refer to the bond between the player and the first human, as together the entire world can be erased, something which cannot be performed by either entity alone.
  • Despite being the strongest weapon in the game, it (intentionally) never sees any real use without hacking as the last enemy has only 1 HP. The same applies to The Locket, the strongest armor in the game (as the last enemy removes the player's INV through KARMA).
  • It is heavily implied that the Real Knife and the Worn Dagger are the same item, but since the protagonist has a higher LOVE in Genocide, it is described as a killing tool rather than a gardening tool.


  1. Where are the knives. – The protagonist examining the kitchen drawer at Home

Consumables Monster Candy • Bandage • Spider Donut • Spider Cider • Butterscotch Pie / Snail Pie
Snowman Piece • Bisicle / Unisicle • Cinnamon Bunny • Temmie Flakes • Abandoned Quiche
Dog Salad • Astronaut Food • Instant Noodles • Crab Apple • Hot Dog...? / Hot Cat
Glamburger • Sea Tea • Starfait • Legendary Hero • Bad Memory • Last Dream • Popato Chisps
Nice Cream • Junk Food • Steak in the Shape of Mettaton's Face • Hush Puppy
Weapons Stick • Toy Knife • Tough Glove • Ballet Shoes • Torn Notebook
Burnt Pan • Empty Gun • Worn Dagger / Real Knife
Armor Bandage • Faded Ribbon • Manly Bandanna • Old Tutu • Cloudy Glasses
Stained Apron • Cowboy Hat • Heart Locket / The Locket • Temmie Armor
Miscellaneous Punch Card • Annoying Dog • Dog Residue • Undyne's Letter (EX) • Mystery Key
Cut Content Croquet Roll • Rock Candy • Pumpkin Rings • Stoic Onion • Ghost Fruit • Puppydough Icecream

Start a Discussion Discussions about Real Knife

  • [{{Database error;%titlenotrecognized%/}}]

    10 messages
    • Chara says "About time" because the Real Knife is the first actual weapon you get.
    • K
  • Asriel and the real knife

    11 messages
    • Puppycornashlynn wrote:Puppycornashlynn wrote:AccurateJaney Gest2434 wrote:Using Debug Mode and pressing O + P makes him spareable and when ...
    • Btw, before anyone asks if you can kill Asriel Dreemurr with the Real Knife, here's answer. Attacking Asriel with the Real Knife doe...