This curious monster consists of an invisible, incorporeal sentience anchored to a cloth body approximating its true shape. It is highly particular about this outer body, accepting little deviation from the standard shape and strangely averse to all but a few materials, usually heavy cloth or dried skin. It is able to feed on the lifeforce of other creatures whenever they experience fear, and "forages" by startling small animals or children. Over time, collected lifeforce can spur the growth of biological organs beneath its cloth skin, but it has little use for them and may even rip them out to throw at enemies, mark its territory or enhance its scare tactics

   The Oogaboo's most impressive trait is its ability to temporarily leave its own body and take control of other inanimate bodies with a particular fondness for human remains and humanoid objects. It can survive in this manner for up to an hour before snapping back to its original body, but requires an additional hour of rest before repeated use of this power.

   If an Oogaboo's artificial shell becomes damaged, it will carefully replicate the molecular structure of the fabric in a process that mirrors biological healing. Multiple Oogaboo have even been observed working together on the generation of an entirely new individual through the same mechanism.