The Poltergust G-00 is a vacuum-like device featured in the video game series Luigi's Mansion. It is primarily used by the character Luigi to capture ghosts and other supernatural entities. The G-00 is equipped with advanced technology that allows it to suck in ghosts, as well as various objects, making it essential for solving puzzles and clearing areas in the game. This device also has a unique function called the Gooigi, which allows Luigi to create a gooey doppelgänger. Gooigi can pass through obstacles and reach areas that Luigi cannot, enhancing gameplay and exploration. The Poltergust G-00 is a key tool for players as they navigate haunted locations and confront various ghostly foes.