Santa Claus, also known as Father Christmas, Saint Nicholas, Saint Nick, Kris Kringle, or simply Santa, is a legendary figure originating in Western Christian culture who is said to bring gifts during the late evening and overnight hours on Christmas Eve.

The dean is the Santa in this Christmas update

Jack Skellington, also known as the "Pumpkin King", is the main protagonist of Tim Burton's The Nightmare Before Christmas and all Nightmare Before Christmas media. Jack is an extremely tall skeleton who wears a black pin-striped suit, complete with a bat bow-tie and black dress shoes. He has earned the title of Pumpkin King by being terrifying to humans (but never harming them), a clearly well-earned title as it appears he is even able to scare the monsters that occupy the town. He lives in Halloween Town, a world based solely on the holiday of Halloween. The holiday is on Oct. 31

It looks like Blue from Rainbow Friends had decided to dress up as Santa Claus for Christmas