The Happy Mushroom is shaped like a shorter version of the Heartless emblem; its basic shape is that of a large heart with a short fleur-de-lis on its bottom. Its edges are gray and the face of the shield is dark gray with three gray, zig-zagging lines decorating it. Superimposed over the shield’s face is the head of one of the Mushroom XIII.
Its "hood" is gray with dark gray, angular spirals on it, its face is black and its eyes are yellow and seem to glow. The tips of its hands are visible under its head. There is also a short, black, zig-zagging spike on either side of the shield.