Santa Claus is an NPC in xmas_in 100 95.
During Christmas, he warps players to league, where Christmas monsters can be found.
He also sells a Santa's Wardrobe for the price of:
Santa Claus: "Welcome back Player! What can I do for you today?"
i. I want Christmas Gifts!
[Broadcast] Santa: Blessed Christmas - 'Player'!
ii. I want to check your items.
Santa Claus: "Please, have a look..."
[Option] Event Items → [Shop Items] Santa's Wardrobe