Superman , if any one of santas reindeers has an an argument with another , or rudolfs nose isn't so bright the sled is held up until the matter is resolved
Obviously Santa because to reach every house in one night he would have to have a higher velocity then a speeding bullet.
got to be superman
Santa he gets around more, and he seems to be more efficient.
When around he is everywhere.
Superman of course! Santa's great but let's face it, a jolly fat man in a sleigh pulled by flying reindeer isn't going to be faster than a superhero from Krypton who can stop speeding bullets.
gotta be santa...superman doesn't go to billions of homes in ONE night right??lol
apparently it doesnt matter because superman can go bak in time and make up distance:d
Well Duh! Santa