Oozer (Luigi's Mansion 3)

Oozers are long, skinny, yellow ghosts in Luigi's Mansion 3. They look and behave very similarly to Hiders from Luigi's Mansion: Dark Moon, as they like to hide in or near furniture and throw items such as fruit at Luigi. Oozers have 100 HP.

Oozers are more aggressive than Hiders, as they attack much faster and more frequently. They also sometimes throw objects in sets of three instead of just once. They are first encountered in the Entertainment Room of the Mezzanine after defeating Chef Soulfflé.

The end of the game reveals the Oozers were being brainwashed by King Boo's crown gem, as they and the other ghosts quickly regain their senses and become friendly once the gem vanishes from Luigi's hands as they were about to attack him. Among the rest of the standard ghosts in the game, Oozers are seen working with the protagonists to rebuild the fallen hotel through a series of pictures throughout the closing credits.

Trivia

 * Their design is pretty similar to Stretch, the leader of Casper's.