Operates the Hell Train that carries the deceased to the afterlife. The train runs underground.

A scarecrow wizard and the mayor of Gwangha City. He has a past connection with Sleepground.

A vampire.

A half-human, half-dragon who left home. He must eat flowers to maintain his human form. He loves the gaming console at Sleepground's house.

After suffering from workplace harassment, she won a housing lottery and moved to a house in Gwangha City. She is the only human in the neighborhood.

A dream fairy and a fairy tale author. He gave Sleepground a rabbit plushie as a gift.