Poltergust 5000

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Poltergust 5000 is 's Final Smash. It was confirmed on October 31, 2017 as a Halloween surprise.

Origin
The Poltergust 5000 debuted in Luigi's Mansion: Dark Moon, where it was an upgrade of the Poltergust 3000 that was used in Luigi's Mansion for the Nintendo GameCube. It was found by Luigi in the Gloomy Manor inside a car. Luigi also needed to find the Strobulb and the Dark-Light to help him on his quest. Poltergust 5000 is Luigi's weapon for the entire game, constantly gaining upgrades as Luigi collects money throughout the game.