santa claus
A transformed version of Saint Nicholas, Santa Claus is traditionally a fat man wearing white-edged red clothing who travels down good children's chimneys to deliver presents (and bad children's chimneys to deliver coal) at Christmas.
His elves make the presents at the North Pole, and his flying reindeer pull his sleight to the houses.
Theories abound, from the myth of Ms. Claus to calculations of exactly how fast the reindeer need to pull his sleigh (more than 3000 times the speed of sound, according to one estimate).