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.).
Professor Ghosts
- 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.
Trivia
- The first letters of the names of each Possessor can be spelled out to form the word "Ghost".
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| Major characters | Major characters | Luigi • Mario • Professor E. Gadd • Toad • Polterpup • King Boo |
| Ghosts | Regular | 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 |
| Bosses | Story mode: Ancient Poltergeist • Big Boo • King Boo • Three Poltergeists • Possessors (Grouchy · Harsh · Overset · Shrewd · Tough) • A Strong Gobber, a Strong Greenie, and a Strong Slammer • Strong Poltergeist • The Three Sisters ScareScraper: Beetle Whisperer • Bomb Brother • The Brain • Creeper Launcher • Primordial Goo • Terrible Teleporter | |
| Other species and enemies | Bat • Beetle • Crow • False door • Flytrap • Frog • Fuzzball • Gold Robomb • Mouse • Orange flower • Robomb • Spider | |
| Locations | Gloomy Manor | Balcony • Bedroom • Cellar • Coatroom • Common Hall • Dining Room • Entrance • Foyer • Front Yard • Garage • Guard Hall • Kitchen • Lab • Library • Lobby • Master Hall • Mudroom • Mudroom Exterior • Parlor • Patio • Rafters • Secret Pocket • Studio • Study • Under the Stairs |
| Haunted Towers | Botany Lab • Conservatory • Courtyard • Crow's Nest • Crypt • East Hall • Eerie Staircase • Family Room • Garden • Gardener's Dwelling • Gardener's Lab • Greenhouse • Haunted Towers Entrance • Hollow Tree • Hydro Generator • Laboratories • Lounge • Old Graveyard • Plant Nursery • Rooftop Pool • Rumpus Room • Seedling Laboratory • Sewer • Skybridge • Solarium • Tool Shed • Toolshed Stairs • Tower Lobby • Tree House • Tree Root • Water Supply • West Bathroom • West Bedroom • West Garden • West Hall | |
| Old Clockworks | Antechamber • Belfry • Belfry Clock • Canyon Hall • Canyon Narrows • Canyon Stairs • Cargo Room • Clock Tower Gate • Clockmaker's Chambers • Clockworks Court • Container Yard • Crank Room • Drafting Office • Finishing Room • Gear Chamber • Kiln Room • Maintenance Hub • Movements • Pit Slide • Quarry • Roundhouse • Roundhouse Pit • Service Elevator • Storage Room • Storm Cellar • Synchro Gantry • Synchronization Room • Tomb • Transportation Hall • Warehouse • Workshop | |
| Secret Mine | Airway • Basin • Chalet • Chalet Approach • Cinder Mine • Coward's Chasm • Crossroads • Crystal Quarry • Deep Hall • Drift Hall • Frozen Pit • Fishing Hut • Gondola • High Wires • Ice Lake • Maintenance Room • Pit Mine • Prospector's Crossing • Shaft • Skip Slope • Smokehouse • Smuggler's Hideout • Terminal • Under the Ice • Workshop • Workshop Landing | |
| Treacherous Mansion | Ancient Exhibit • Archives • Aviation Exhibit • Bottom of Well • Ceremonial Chamber • Cliffside • Dark Age Exhibit • Dungeon Cells • East Balcony • East Corridor • East Gallery • Front Entrance • Gargoyle Roof • Grand East • Grand West • Guard Tunnel • Haunted Catacombs • Ice Age Exhibit • Inner Courtyard • Jungle Exhibit • Kitchen • Nautical Exhibit • Restrooms • Space Exhibit • Study • Terrace • Train Exhibit • Underground Lab • Veranda • West Balcony • West Corridor • West Gallery | |
| Other | Bunker • E. Gadd's Vault • King Boo's Illusion • Mario's Painting • ScareScraper • Toad's Painting | |
| Items | Items | Amethyst • Bill • Coin • Diamond • Emerald • Gem • Gold Bar • Gold Bone • Key • Poltergust 5000 • Red Coin • Ruby • Sapphire • Strobulb |
| Objects | Objects | Bulb (gold) • E-Gate • Paranormal portal • Paranormal shield • Sled-mounted shooter |
| Equipment | Dark-Light Device • Dual Scream • Pixelator • Poltergust 5000 • Strobulb | |
| Missions | Gloomy Manor | Poltergust 5000 • Gear Up • Quiet Please! • Visual Tricks • Sticky Situation • Confront the Source • Gradual Infiltration |
| Haunted Towers | A Job for a Plumber • The Pinwheel Gate • Graveyard Shift • Pool Party • Doggone Key • Tree Topping • Hostile Intrusion | |
| Old Clockworks | A Timely Entrance • Underground Expedition • Roundhouse Brawl • Play Catch • Piece at Last • Showtime • Outlandish Interruption | |
| Secret Mine | Cold Case • Hit Rock Bottom • Across the Chasm • Chilly Ride • Severe Infestation | |
| Treacherous Mansion | Front-Door Key • Double Trouble • A Train to Catch • Ambush Maneuver • Paranormal Chaos • Stop the Knightmare • Terrifying Invasion | |
| King Boo's Illusion | A Nightmare to Remember | |
| Further info | Further info | Gallery |