Santa Claus is a character who makes several appearances in Dr. Slump. He makes a cameo in "Penguin Village S.O.S.: Part 2". Senbei Norimaki dresses like him for Christmas in "Sad, Sad Santa". Santa Claus appears entering the Norimaki Residence chimney in summer in "Witchy Gone Wild". Dr. Mashirito, Tori-bot, and the leader of the Fly Milk gang appear in "Black Santas of Fear" as evil Santas in black coats.
His assistant later appears in the series, with a major role.