Tuyul

Tuyul are described as supernatural beings in Indonesia, a popular belief that human can enslave Tuyul to do several things for his/her own benefit, such as stealing money. It is said to originate from unborn babies, so it's look like a bald child, and tend to have childish behavior.

It will wander at night, stealing money from the neighbourhood for it’s owner. But it doesn't come with a free price. If the master is male, one of the female family/relatives must "breastfeed" them in return of their services. If the master violates the rules and treat them bad, misfortunes will come unto him/her and the family.