Look out its the Goblin King! Jareth. Yep, that's right Jareth. the terrible king of the Goblins from Jim Henson's Labyrinth. and his terrifying pants. He steals babies I think that's enough to warrant his being included with the rest of the monsters in the Monstar collection.
And of course what collection of monsters would be complete without at least one devil. Oh wait, I already had the liquid version of Satan from Prince of Darkness but I really felt like drawing those horns.