Big Lantern Ghost
From the Super Mario Wiki
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In battle the player should attack the Big Lantern Ghost's lantern, which in turn causes the room to brighten. When the room is lit enough that the Big Lantern Ghost can be seen, the player can attack him directly. After the Big Lantern Ghost is defeated, the player can shatter the lantern with their Hammer. A Li'l Sparky named Watt will emerge from the lantern. After the player frees her, Watt becomes the player's sixth companion.
Super Mario-Kun flavor text
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