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Mini Goobs are miniature types of ghosts found in Luigi's Mansion 3. As their name implies, they are smaller versions of normal Goobs spread throughout The Last Resort. Unlike most other types of ghosts, they are always found in groups of many of their kind. Compared to the other types of ghost in the game, they are relatively easy to capture, due to the fact that they lack HP. Instead, a flash with the Strobulb will cause them to instantly be defeated by sucking with the Poltergust G-00. This behavior is similar to that of Bowling Ghosts, Ceiling Surprises and Purple Bombers from Luigi's Mansion.
A similar enemy, the Mini Hammer, also appears throughout the course of the game and behaves in a similar manner.