It's Santa's opposite called Krampus - who's a mythical devil figure who carries a huge stick or whip and punishes bad children.
In the mountains of Austria, Krampus frightens and warns bad children while Santa gives presents to children who've been good.
Traditionally, young men dress up as Krampus during the first two weeks of December and roam the streets frightening children with sticks, chains and bells.
Men dressed as Krampus used to visit schools, but that's been banned because they terrorized the children.
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