An OFFICIAL coloring book featuring monsters originally created by Slimyswampghost himself, Trevor Henderson. Lovingly rendered by Human Person. You can color them all Siren Head Big Charlie Long Horse There's 14 original illustrations in all, and they're all waiting for you.. in the dark..The horror story has many charismatic and frightening characters. And you've probably heard the legends about a mysterious creature called Siren Head, which...