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Malice Mode-Only Content: This information applies only to Malice Mode and Malice Mode worlds.
Grand Dad
  • Grand Dad.png
Stack digit 1.png
Damage777 Melee
Knockback77 (Insane)
Critical chance4%
Use time24 Fast
TooltipLowers enemy defense to 0 when they are struck
Yeets enemies across space and time
RarityRarity Level: 10
Sell 20 Gold Coin.png
Dropped by
Moon Lord1100%

The Grand Dad is a Post-Moon Lord broadsword that drops from the Moon Lord in Malice Mode. Whenever the Grand Dad contacts a non-boss enemy, their defense is reduced to zero and their knockback resistance is set to -600%. It also has an exceptionally high knockback stat and size.

Its best modifier is Legendary.


  • Grand Dad deals 75% of its original damage on Polterghast and Signus, Envoy of the Devourer.
  • The Grand Dad's knockback resistance removal can affect enemies that are immune to knockback.
  • The defense and knockback resistance removal does not affect enemies with no contact damage or most event minibosses.


  • The knockback makes this weapon a good tool to keep an enemy with high health away.


  • Its name and tooltip, as well as the "7" on its sprite (and the 777 base damage and 77 knockback), are a reference to a meme known as "7 GRAND DAD," a Chinese bootleg copy of The Flintstones: The Rescue of Dino & Hoppy for the Famicom system and popularized by Vargskelethor a.k.a Joel from Vinesauce, and SiIvagunner.
  • The word "Yeet", which is present in the tooltip, is internet slang that means "to throw at high velocity".
  • It was formerly the rare variant of the Grand Guardian.