Longinus is one of the 'Twenty' World Items.
During Ainz Ooal Gown's raid on the Great Tomb of Nazarick, one of the guild members wanted to use Loginus against the Lord of Helheim.
This World Item is capable of complete deletion of the target, but the price to pay for its use was the complete deletion of the user. After having the data deleted by this World class item, unless another World Item was used for revival, there was no coming back.
- Longinus according to Christian lore is the spear that stabbed Jesus and was drenched with his blood.