Sydmull is a penguin in Club Penguin who first starred in the television special We Wish You a Merry Walrus where he goes on an adventure with Roofhowse to help him save the holidays. He also stars in Club Penguin: Monster Beach Party where he helps Gary the Gadget Guy build the Slush-Rusher 1, and in Club Penguin: Halloween Panic! where he helps return ghosts to their world before the entire island remains "ghostified".