Ghost (Luigi's Mansion series)

The ghosts are species from the Luigi's Mansion series and are the series' main enemies. They are possibly a subspecies of Boos.

History
Ghosts first appear in Luigi's Mansion. The ones in this game are created by the ghost artist Vincent Van Gore after King Boo releases him from his portrait, along with the other portrait ghosts. Ghosts never appear in the direction Luigi is looking, which E. Gadd also mentions. Sucking up more than one ghost at a time will always give a heart, with the exception of Mr. Bones and the Garbage Can Ghost.

Different types of ghosts appear in Luigi's Mansion: Dark Moon, the sequel to Luigi's Mansion, and inhabit Evershade Valley. These ghosts are friendly, due the influence of the Dark Moon, and help Professor E. Gadd with his paranormal research. However, when King Boo destroys the Dark Moon, the ghosts turn against E. Gadd and go on a rampage, under King Boo's command. Luigi once again comes up behind them, catching them, defeats King Boo, and repairs the Dark Moon, making them friendly yet again.

In Luigi's Mansion 3, another set of different ghosts appear as Hellen Gravely's and King Boo's minions. They were part of E. Gadd's collection of ghosts along with King Boo before he was tricked by Hellen into coming to her hotel, trapping him and freeing them and King Boo. They initially are disguised as human employees of the Last Resort hotel when Luigi, Mario, Princess Peach, and three Toads arrive, although after all but Luigi were captured, they stopped using the disguises. Luigi, with Gooigi joining him, ultimately recaptured them. After the Last Resort Hotel was destroyed, the ghosts escaped from the containment field and were about to attack Luigi, only for King Boo's gem to mysteriously vanish and cause the ghosts to regain their senses, also being distraught over the destruction of the Last Resort before E. Gadd offered to help them rebuild. After the repairs were done, E. Gadd, Gooigi, and the ghosts bade Luigi, Mario, Princess Peach, and the Toads farewell.

Luigi's Mansion

 * Instruction booklet bio: "There are several types of normal ghost, each with a different shape and size. They are not abnormally difficult to capture, because they're, well, normal. There are also slightly special elemental ghosts, but you'll have to see page 15 for more information about them."

Trivia

 * The trophy in Super Smash Bros. for Wii U is simply a slightly retextured version of the Super Smash Bros. Brawl trophy.
 * In Luigi's Mansion 3, the first letters of the Ghosts' names spell out "GHOST", similar to the names of the mansions, Possessors, and bonus missions in Luigi's Mansion: Dark Moon.
 * In early versions of Luigi's Mansion, some of the normal ghosts had noses.