Luigi

Luigi is the main protagonist of Luigi's Mansion and it's sequel, Luigi's Mansion: Dark Moon. His main objective was to rescue Mario from the diabolical King Boo (in the first game), and to restore the Dark Moon (in the sequel).

History
Luigi is the brother of Mario, and is a great hero, especially for Mario. He can fight, but he's very cowardly. He is a good protagonist like his brother Mario, however because of his cowardly nature, he is often considered a coward and a weakling.

Biography about Luigi
Luigi won a mansion in a contest he didn't even enter. He then met Professor E. Gadd, an old man who studies Phycology and Ghostology. It turned out that the mansion that Luigi had won was haunted. The old man told him that he had to get rid of the haunted mansion. Luigi then went to his training to capture ghosts and portraits in the mansion. E. Gadd was impressed when Luigi had found Mario trapped and rescued him, as well as trapping King Boo in a painting.

He is a coward in many ways who will jump at the slightest noise or movement. However, although the series must be completely nightmarish for him, he will do his best to rescue Mario from King Boo. He likes a simple, quiet life at the weekends, and wants to help Mario on his adventures during spare time.

Luigi's Mansion: Dark Moon
Luigi is sleeping in his chair in the beginning, when all of a sudden, his TV started going to static. Professor E. Gadd appeared on his television, giving Luigi a jumpscare before being pixelated and sent to Evershade Valley to go on an adventure. Being the protagonist, Luigi faces all enemies in all mansions, rescues Toads, and recovers Dark Moon pieces while trying to rescue Mario.

King Boo had shattered the Dark Moon with his new purple crown (unlike the red one in the prequel) to release paranormal chaos in Evershade Valley and is stopped by Luigi.

Luigi, equipped with new gadgets such as the Dark-Light, Strobulb, Dual Scream (DS) and the upgraded Poltergust 5000. Luigi still fears everything, including the Pixelator and the slightest jumpscare. The new ghosts scare him just as much as ever, but he is determined to rescue Mario. He has had a frightened reaction to Boos, spiders, Evershade Valley Ghosts, and the Pixellator as well as the rest of the unfamiliar territory. He mumbles 'Hello?' every time he looks up a fireplace or the Player presses the arrow control pad.

He will look after the Toads in the game, and has the ability to fire them out of the Poltergust 5000, into walls or over (or into) bottomless pits, drops, or obstacles. He lets them go through doors before he does and is not uncomfortable when a purple Toad hugs him after being rescued.

Luigi adventures through 5 mansions, each get harder with improved ghosts. During his adventures, the ghosts are recorded (the ones encountered) in 'E. Gadd's Vault' and gems are picked up along the way. Also don't forget the gold bones (worth 300 coins, if not used) that give you an extra life - so find 'em and keep 'em.

The last mansion is the longest (in terms of missions), the fourth is the shortest (only four- including boss level) and the rest equal in levels. The other mansions have five levels and a boss level. In the case of the last, there are two boss levels. The Ambush Maneuver level (against Big Boo) and Stop the Knightmare (against the hardest and last possessor ghost).