Susuwatari

More commonly known as Sootballs, these little magical beings are presumably made of soot and dust. They look like black pom-poms with arms and legs.

They like to eat small star-shaped candies and doing odd jobs in places like the Boiler Room and moving pieces of coal that are heavier than themselves. Sort of like ants.

If you step on them they will dissolve, but reform soon after.