Other forms: kobolds
A kobold is a mischievous spirit or gnome from German folklore. In children's books kobolds are usually pictured wearing pointy red hats.
As household spirits, kobolds are said to perform chores, like tidying or cleaning up. But because they're pranksters, they are also famous for hiding things, tripping people, or otherwise being naughty. They're a little bit scary, too, resorting to cruelty or violence when crossed. The word kobald means "household gremlin" in German, from kob, "house or chamber."