Krampus is a colorful devil-like character who scares European children around Christmas time. There are some really nice Krampus cards out there, such as the ones shown above, as well as a lot of cards with red backgrounds which no one seems to want to buy.

Little girls and Krampus by Wiener Werkstatte artist Susi Singer( 1891-1955, Austrian). Singer was an illustrator and ceramicist who emigrated to California