The Monocussioner is a weapon in the video game Shadows of the DAMNED. It is one of the many forms taken by the demonic Johnson, in this case a shotgun. Demon skulls are used as ammunition for the weapon. George Reed's second Blue Gem allows Johnson to take on a new shotgun transformation that replaces the Monocussioner, called the Skullcussioner. The Skullfest 9000 is a third upgrade earned from Elliot Thomas' first Blue Gem, while the fourth and final revision, the Skullblaster, is earned from Justine Divangelo's Blue Gem.