From Wikipedia: Krampusnacht
The Feast of St. Nicholas is celebrated in parts of Europe on 6 December. On the preceding evening of 5 December, Krampus Night or Krampusnacht, the wicked hairy devil appears on the streets. Sometimes accompanying St. Nicholas and sometimes on his own, Krampus visits homes and businesses. The Saint usually appears in the Eastern Rite vestments of a bishop, and he carries a golden ceremonial staff. Unlike North American versions of Santa Claus, in these celebrations Saint Nicholas concerns himself only with the good children, while Krampus is responsible for the bad. Nicholas dispenses gifts, while Krampus supplies coal and the Ruten bundles.
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