Russian and Slavic
Father Frost
The winter spirit (Morozko, Ded Moroz) who tests kindness.
In Russian and wider Slavic folklore a winter spirit, known as Morozko or Father Frost (Ded Moroz), walks the frozen woods. In the old tales he rewards people who stay kind and polite in the cold.
Today Ded Moroz is also the gift-bringer of New Year celebrations in Russia and nearby countries.