Santa Claus is a figure with legendary, historical and folkloric aspects who is said to bring gifts to the homes of children during the late evening and overnight hours of Christmas Eve, December 24, on Earth and possibly the rest of the universe as well. (First Christmas: Part I, First Christmas: Part II, The Naughty List (Part One), The Naughty List (Part Two))
Guido O'Brein comes back as a one-off special as Santa Claus in series 1