Doom Dancer Music Box

The Doom Dancer Music Box (sometimes referred to as the Doom Dancer) is a device from The Adventures of Super Mario Bros. 3 episode Do the Koopa.

The Doom Dancer gets its name from its ability to force anyone to dance at any speed whenever they want. Mario, Luigi, Princess Toadstool, and Toad were after the Music Box in order to put a stop to King Koopa and his Koopalings.

Eventually, word got out to the Koopas, and Cheatsy, Big Mouth, and Bully were sent out to retrieve it.

When Bowser acquired the Doom Dancer, he forced the entire Mushroom Kingdom to dance to his song, Do the Koopa, a song that shared its name with the episode title.

Mario managed to dance his way over to Koopa and fight for the Music Box; however, it broke to bits when it fell off the Doomship.