Nukadoko

Nukadoko was originally a nameless ghost who inhabits a jar below Humming Dining's floor. She later becomes Amon Patricia's follower.

In Chapter 19, she temporarily works at the Humming Dining. However, due to her being a ghost, not all the costomers can see her (including the Manager). Thus, she works as a kitchen helper instead of waitress. She can only be seen by everyone for a short amount of time whenever she eats Kouichi Iruma's meal.