Clem

Clem is the tenth boss encountered in Luigi's Mansion 3. He is a mechanic ghost living in the Boilerworks who holds the Tomb Suites' elevator button.

Appearance
Clem is a purple ghost with blonde hair with a bald spot, yellow pupilless eyes, a single tooth, a small scratchy patch of facial hair on his chin and a gravelly redneck-style voice. He wears a white and blue cap that bears The Last Resort's logo, blue overalls with a pocket and a single hole where his ghostly tail goes, a white undershirt and green gloves.

History
Luigi initially encounters Clem while the latter is napping. However, before Luigi can sneak away, he accidentally steps on a rubber duck, causing Clem to stir and then activate a pipe to spray Luigi as a prank before fleeing, forcing Luigi to stop the release of water.

Soon, Luigi sees Clem again through a window in the Reservoir, witnessing him pulling a switch which floods the room. As Luigi looks on, Clem scares him by surprise, causing him to fall into the water and almost drown, only for Polterpup to save him. Luigi is forced to take a detour through the sewers in order to find a way to drain the Waterworks.

He later encounters him in a tank, where Luigi again attempts to avoid waking him, only to end up stepping on another rubber duck, awakening him yet again. Clem gets irritated, but then gets the idea to fill the tank. However, after Luigi saves himself by getting into an inner tube, he decides to confront Luigi personally.

Battle
Clem will attack the player with a paper fan as well as launch mines.

The player needs to manipulate Clem into spinning himself in circles with his fan, then suck his inner tube and launch it into one of the sides of the reservoir, popping it. Afterwards, the player needs to disembark and approach his prone body. If he regains consciousness, he will be busy putting on another inner tube, requiring the player to flash him as he is busy and then try to suck him in (though it is preferable to use Gooigi and have him suck Clem in while Luigi stays inside the tank). Upon being defeated, Clem will struggle to free himself before being sucked in, humorously releasing several rubber ducks in addition to the Tomb Suites' elevator button which falls into the tank, requiring Luigi to drain the tank to collect it.

Trivia

 * If the player is far away enough from him during his battle, Clem will usually fall asleep.
 * If the player fires the Suction Shot at him, he will swat it away with his fan.