Morty

"The tragedy. Oooooh ho ho ho! Is this my end? Is this what I, Morty, director of the finest films, am destined for? How could I lose it... I am a puny, worthless movie director... That's all... Even the sparkle from this beautiful button is now nothing but a dull hue... AHHHHH! My bright red megaphone! Where art thou?! I would give anything to be able to hold my dear, sweet megaphone again..."

- Morty

Morty is a movie director ghost and the eighth boss encountered in Luigi's Mansion 3. Unlike the other bosses, Morty does not need to be captured due to being the only friendly one, and is never directly fought prior to obtaining the elevator button from him. He instead has Luigi fight against various elements as part of a filming project.

Appearance
Morty is a blue ghost with yellow eyes and mouth, and navy blue eyebrows. He wears a dark blue sweater and cap, and likes to carry around a large, red megaphone.

Luigi finds Morty upset over a lost director speaker and attempts to hand it back to him. Morty is then overjoyed, although after noticing Luigi, he then notices that several of his features make him perfect for stardom before starting filming and demanding for a stage crew.

Morty is not fought, but rather filming the battle and gratefully commenting his two "actors" while filming. After Luigi beats the Godzilla-like ghost, Morty will give him the elevator button as a sign of gratitude before flying into his editing room.

Morty can then be seen editing in his office and, if left alone for a short period of time, will then relax after finishing his movie.

Battle
As noted above, the player must instead fight a Goob inside a monster costume as part of Morty's new movie, as opposed to just fighting Morty himself. The Goob attacks with fireballs from its mouth, either a barrage of small orange ones or a single large blue one. If it's too close to a building or Luigi, it can also swing its claws at them, destroying any hit buildings in the process. The player has to bait the Goob into launching its large blue fireballs and then repel it with the Poltergust G-00 until it explodes in the monster's face. After the first hit, the Goob monster uses orange fireballs more frequently and replaces the blue fireball with a green one; when Luigi blows it back, the Goob will retaliate with a stronger breath that requires Gooigi's help to overcome. For the final hit, the Goob retaliates to the redirected fireball by blowing even harder than before, requiring the player to mash the A button to force the ball into the foe one last time. If successful, the monster costume is destroyed by the blast, leaving only a standard Goob for the player to defeat. Afterwards, Morty expresses gratitude to Luigi by willingly giving Luigi the elevator button to the 9th floor, and collecting his film reels and leaving for the cutting room. However, when Luigi goes to put the elevator button back in, Polterkitty will swipe it, forcing a chase to get it back.

Luigi can go to Morty's Editing Room and capture him at any time, however capturing him while he is still editing will result in his movie becoming unable to view. Morty's editing will be finished by the time Luigi retrieves the 9F button from Polterkitty. If he's done editing, Morty can be seen sitting on a chair in a relaxed pose, presumably sleeping. When he is being sucked in, he will make a sad pose and do his picture pose with his hands. Unlike when capturing other boss ghosts, Luigi expresses guilt about his actions (even more so if he is not allowed to finish his film), likely because Morty was friendly and willing to give Luigi the button he was holding.

Trivia

 * During Luigi's Mansion 3 development, the developers considered making it impossible to capture Morty. This was changed after consideration that some players would want to capture every ghosts.