Traditionally Krampus turns up on Dec. 5, the same evening that St. Nicholas (Svatý Mikuláš) comes with an angel and a devil. Mikuláš’s accompanying devil in Bohemian tradition does not have a name other than Čert, which simply means “devil.” Čert is a friendly and cartoonish character with a coal-dust-covered face, curly hair, and short red horns. He is not the same as the fur-covered and snarling Krampus, though their traditions overlap a bit.