Fuzzball

Fuzzballs are purple enemies that appear within the Secret Mine in Luigi's Mansion 2. True to their name, they appear to be balls of fuzzy hair with legs and a mouth. Although they are harmless, they can be very annoying when Luigi is trying to use the Poltergust 5000.

Appearance
They often are sleeping when encountered, however, when they wake up they start to continuously roll and run against Luigi, and if sucked up, prevent Luigi from using the Poltergust 5000. Eventually they'll go back to sleep. There is no way to defeat them, so Luigi must deal with ghosts while trying to avoid getting them stuck in the Poltergust 5000. When spat out of the Poltergust, they roll along the floor and get dizzy when they halt to a stop, with their hair fluffed up. There are also golden version of this enemy. When shot with the Poltergust, they roll along the floor making Gold Bars appear. Since there is no way to defeat them, they will eventually turn into purple versions, and produce no more cash.

Trivia

 * They only appear in the Secret Mine.
 * Along with this, they only appear within the Chalet of the Secret Mine.