It was formerly the rare variant of the Grand Guardian.

The word 'Yeet', which is present in the tooltip, is internet slang that means 'to throw at high velocity'.

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

It is one of the largest and best mods in TModLoader, adding hundreds of items and blocks, five biomes, a new class, over 30 unique songs, more than 50 recipes for previously uncraftable vanilla items, 23 bosses, and multiple hours of post-moonlord content.

The defense and knockback resistance removal does not affect enemies with no contact damage or most event minibosses. The Calamity Mod is by far the most well-known mod in the Terraria community.

The Grand Dad's knockback resistance removal can affect enemies that are immune to knockback.

Grand Dad deals 75% of its original damage on Polterghast and Signus, Envoy of the Devourer.

It also has an exceptionally high knockback stat and size. Whenever the Grand Dad contacts a non- boss enemy, their defense is reduced to zero and their knockback resistance is set to -600%. In this series we playthrough the HUGE PC Mod Calamity The version you are seeing is PC version 1.3.4 Dungeon. The Grand Dad is a Post- Moon Lord broadsword that drops from the Moon Lord in Malice Mode.

Grandguardian calamity mod terraria