Possessor Ghosts are the main boss ghosts of Luigi's Mansion: Dark Moon. As the name implies, each Possessor Ghost possesses a different body and must be forced out before being sucked up by Luigi. Each Possessor is defined by the number of horns on its head, each one having a horn for their turn being battled (i.e. the Grouchy Possessor has one horn for being the first boss.).
- The Grouchy Possessor of Gloomy Manor.
- The Harsh Possessor of the Haunted Towers.
- The Overset Possessor of the Old Clockworks.
- The Shrewd Possessor of the Secret Mine.
- The Tough Possessor of the Treacherous Mansion.
- The first letters of the names of each Possessor can be spelled out to form the word "Ghost".
|Luigi · Professor E. Gadd · King Boo · Mario|
|Ancient Poltergeist · Boo · Creeper · Gobber · Greenie · Gold Greenie · Hider · Poltergeist · Polterpup · Slammer · Sneaker · Strong Gobber · Strong Greenie · Strong Hider · Strong Slammer · Strong Sneaker · The Three Sisters|
|Grouchy Possessor · Harsh Possessor · Overset Possessor · Shrewd Possessor · Tough Possessor · King Boo|
|E. Gadd's Bunker · Evershade Valley · Gloomy Manor · Haunted Towers · Old Clockworks · Secret Mine · Treacherous Mansion|
|Dark Moon · Dark-Light Device · Dual Scream · Golden Bone · Key · Poltergust 5000 · Strobulb|