A shadowy figure found throughout different parts of the dream world. 

The appearance of the [[pirori_(yume_nikki)|Pirori]] differs depending on where they are, though they all share the characteristic of being humanoid in shape
and having a large cavity through their heads that replaces their face and resemble the eye of a [[needle]].

"Yume Nikki Wiki":[https://yumenikki.fandom.com/wiki/Pirori]
pirori (yume nikki)