Spear of Longinus Persona
The spear in the hand of the mustachio dictator.

Name: Spear of Longinus
Origin: Persona
Type: Spear
Powers and Abilities: Anti-Regen, Persona sealing
Destructive Capacity: Street level, universe level anti-regeneration
Wielder(s): Knights of the Holy Lance, Hitler
Material or Element: Unknown
Needed Prerequisite for Use: None
Notable Attacks/Techniques or Alternate Forms:

Spear of Longinus copy: These are replicas of the original spear, most notable that they're able to seal a person's Persona. Wielded by the Knights of the Holy Lance.

Spear of Longinus original: The spear that pierced Christ. In addition to the ability of the copies, its main ability is to create mortal wounds that can't be healed, the effects are so powerful that even with a recently reset universe, the wound inflicted on Maya still left a scar. Wielded by Hitler.

Other: There are several versions of this weapon in fiction, this profile covers the one from Persona 2
 
Not to be confused with the Lance of Longinus from Neon Genesis Evangelion