The Ninja Mask is a members-only land clothing item that was released in Jam Mart Clothing during the Beta Testing. It returned for a second release in August 2011, but it was later put on clearance sometime around 2013.
The Ninja Mask is a solid-colored mask that surrounds the head completely. It has an emblem on the forehead, which looks like a diamond with two swirls above it, and markings behind the neck where it is tied. It appears to be in the shape of a monkey's head, but when equipped, it matches the animal's head shape. There are nine different varieties of this item, including the rare variant.
- The rare version of this mask was released for Rare Item Monday on March 18, 2013.
- It can be won in The Forgotten Desert.
- This item, the Feathered Mask, and the Superhero Mask are the only clothing items for the head that change their shape to match the animal that is wearing them.