Essential Enemies 4: Between Two Worlds is a third party monster manual for use with Old-School Essentials and other old school fantasy role-playing games. This zine contains the following monsters:
_ The Abnormality: A many-limbed, multi-headed angel of destruction that comes to destroy a city once every thousand years.
_ The Amalgam: A bizarre creature that is the combination of dozens of people. Now it tears holes in the walls of reality, opening portals to the strange new worlds beyond.
_ Bugbears: Insect-faced beings from another world, who hide shiny treasures underneath their fur.
_ Echo Tourists: Slug-like aliens who come to a tower in the middle of the desert to ride their flying carpets.
_ The Frost Giant: With the help of his frost gones, this villain seeks to destroy the heat of the universe. He comes with a dungeon!
_ The Griffarcus: A serpent-tailed beast of burden that can move between worlds, potentially taking a rider with it.
_ The Howling Helm: A magic helmet that summons ghosts to fight for the one who wears it. But other monsters in this book would prefer it in their possessions, as opposed to yours.
_ Living Psychopomp: Beneath the unholy mountain lies the well of souls. This being is not dead, but acts instead as a curator and guardian.
_ Mouth Eyes: A thing with mouths in its eyes that likes to abduct people and subject them to the magic of distant planes of existence to see how their minds and bodies change.
_ Slugbears: They come to our world from a distant star, and while nobles have found some of them to be docile servants, some go feral and flee into the wilderness.
_ Spirit Trader: Though its appearance may seem odd, this creature is an interdimensional merchant who buys and sells all kinds of spirits.
A pdf is available at DriveThruRPG.