From the origins of Krampus, Europe's evil twist on Santa:
"Krampus himself historically comes around the night of December 5, tagging along with St. Nicholas. He visits houses all night with his saintly pal. While St. Nick is on hand to put candy in the shoes of good kids and birch twigs in the shoes of the bad, Krampus' particular specialty is punishing naughty children. Legend has it that throughout the Christmas season, misbehaved kids are beaten with birch branches or can disappear, stuffed into Krampus' sack and hauled off to his lair to be tortured or eaten."
Krampus in reality has nothing to do with Christmas in its' origins.
"Krampus' roots have nothing to do with Christmas. Instead, they date back to pre-Germanic paganism in the region. His name originates with the German krampen, which means "claw," and tradition has it that he is the son of the Norse god of the underworld, Hel. During the 12th century, the Catholic Church attempted to banish Krampus celebrations because of his resemblance to the devil. More eradication attempts followed in 1934 at the hands of Austria's conservative Christian Social Party. But none of it held, and Krampus emerged as a much-feared and beloved holiday force."