We all know that Santa Claus is Satan, as the HPs stated that many times. However, i was wondering if these characters are also Satanic in origins, so I've opened this thread to see if there are some SS who are experts on the matter.
Mari Lwyd, Welsh wandering Horse's skull
Yule Lads (Jolasveinar), they are described as Icelandic Giants who plays pranks
Yule Cat (Jólakötturinn), Icelandic Cat who eats humans who have not received clothes
Befana, Italian Witch who brings candies the January 6
Klöckeln, German
Kallikatzaros, Greek mischievous creature of Winter
Knecht Ruprecht, German assistant of St. Nicholas
Krampus, Austrian assistant of St. Nicholas
Nisse (Tomte), Xmas gnomes of Scandinavian origin
Grandfather Frost (Ded Moroz), Russian gift-giver of January 7th
Olentzero, Xmas giant who brings gifts in the Basque regions
And there are many more that i don't know. I thank in anticipation anyone who will give a detailed answer.

Mari Lwyd, Welsh wandering Horse's skull


Yule Lads (Jolasveinar), they are described as Icelandic Giants who plays pranks

Yule Cat (Jólakötturinn), Icelandic Cat who eats humans who have not received clothes

Befana, Italian Witch who brings candies the January 6

Klöckeln, German

Kallikatzaros, Greek mischievous creature of Winter

Knecht Ruprecht, German assistant of St. Nicholas

Krampus, Austrian assistant of St. Nicholas

Nisse (Tomte), Xmas gnomes of Scandinavian origin

Grandfather Frost (Ded Moroz), Russian gift-giver of January 7th

Olentzero, Xmas giant who brings gifts in the Basque regions
And there are many more that i don't know. I thank in anticipation anyone who will give a detailed answer.