This is a monster mug shaped like Craig Gleason's The Ghoul, which is reminiscent of the vampiric Nosferatu but has elements of a Metaluna Mutant and an Ooze-It. It has a 60's B-Movie vibe. Ghouls, according to Gleason, are an endangered species living in salt caves, they eat dead humans, and live well past 1,000 years...This is the "Slime" variant in green. There is also a Lava Variant in red & black and a Classic Variant in black & white.