It is shown to be a shadowy, elusive, isolated creature which has settled in a dark cave far from civilization. Mollusc speaks an unknown language in a deep menacing voice, which the ghosts (namely Clyde and Inky) seem to understand. It's head and hands are the only parts of it seen, as the rest of it is hidden in the shadows. Its eyes are an eerie white, and are large oval shape. Its mouth, (which spans about half the size of both it's eyes) can be seen underneath.