Santa Claus, known in secret as Bowlful of Jelly, is a minor character in The Backyardigans.
Santa Claus is a Christmas character. In "The Action Elves Save Christmas Eve", his sack of toys is stolen by the Abominable Brothers. He enlists the help of the Action Elves to get it back. After the elves explain to the Abominable Brothers that the sack does not belong to them, Santa instructs the Backyardigans to fill the bag with toys. Santa is never shown completely, but he is seen at a distance and heard over Snappy's cell phone.
It is unknown what Santa Claus looks like in the series. It is likely, though, that he is a fat, jolly, white-bearded man in a red suit.
Santa has appeared in one episode of The Backyardigans: "The Action Elves Save Christmas Eve" from season four.