?????? (mostly referred to as Sasquatch) is an unidentified creature, which became a mascot in August 2014. It made a first appearance in an unused clothing .swf file, and was labeled a mascot in Club Penguin's files. Meeting it allows you to obtain the Mystery Background.
Although its name has never officially been released, the sprites file for the creature, which was released on August 8, refers to it as sasquatch. Other files have subsequently labeled it as "Sasquatch".
It is the third non-penguinmascot, but only the second one not to be a special guest.