The Dutch Christmas mythology is so completely bonkers! Instead of reindeer, Sinterklaas (Santa Claus) has a companion named Zwarte Piet (Black Pete).
Children are told that if they have been good, Zwarte Piet will bring them gifts and sweets, but if they have been bad, Piet will scoop them up, stuff them in his huge dufflebag and spirit them away to Spain as punishment!