31 Days of Monsters - Day 13: Nain Rouge

Nain Rouge is a small demonic creature with crimson skin and a toothy smile. Hailing from Detroit, Nain Rouge is a harbinger of doom, appearing shortly before tragedies or catastrophes. Every year a parade is held in which Nain Rouge is symbolically chased from town as a way of securing a year free from trouble for the city.

31 Days of Monsters - Day 3: Orobas

Orobas is a fearsome Prince of hell that can be summoned by a careful conjuror. Once under the control of a magician, Orobas will never lie, and can give detailed accounts of past present and future events. If accidentally released, Orobas will attack his former captor with two legions of devils.

31 Days of Monsters: Lilith

Time for one last monster.

You might not know this, but before Eve, Adam had another wife named Lilith. Created from the same clay as the first man, Lilith refused to be subservient to someone she saw as her equal. Instead she left Adam, roamed the world outside Eden, and took the archangel Samael - The Angel of Death - as a lover. Their children were the first vampires on the Earth, giving her legendary status among the undead. Lilith is strikingly beautiful, but some lore portrays her as also being cursed with animal like talons and dark hairy legs. She takes a dim view of most men, but women still find favor from her if she's plied with the right offerings. 

Happy Halloween.

31 Days of Monsters: Cambion

This one deals with the birds and the bees, so it's a little NSFW. When demonic Succubi and Incubi feel the desire to start a family the Succubus mommy collects sperm from a human male victim and then passes it on to the Succubus daddy. He in turn passes it to his next female victim who eventually gives birth to a Cambion. Cambions possess none of their parents seductive manners, but are prized among demons for their corruptive influence on human society. Cambions can be recognized by the absence of a pulse until age 7, and their dislike of signs of affection. They also hate cartoons and sugary cereals.

31 Days of Monsters: The Lidérc

If you take the egg of an all-black chicken and incubate it in a pile of manure, it will hatch into a lidérc. A Hungarian shapeshifting demon that attracts money to its "owner", a lidérc can also transform itself into a fantasy lover for its master much like an incubus or succubus. If kept too long however, a lidérc will begin to drain the life from its owner, delivering the victim's soul to it's real master, the Devil. The best way to rid yourself of a lidérc is to give it an impossible task to complete. If unable to finish the task, it will either return to Hell or tear itself apart in frustration.

31 Days of Monsters: The Manchurian Ape-man

In "Horror Express," a frozen, fossil ape-man is being transported to Europe on the Trans-Siberian railway. The creature thaws, and the hapless passengers learn that the creature is possessed by an otherworldly intelligence that feeds on people's memories, and is capable of jumping from body to body in order to stay alive. 

31 Days of Monsters: Day Twenty-seven — The Devil

I don't believe in actual physical incarnations of evil like The Devil, but if he did exist, I imagine he'd be pretty unassuming, and not the cloven-hooved image we usually expect. Also, he would have the easiest job in the world. He's always pictured tempting people into sinning, or tricking them into giving up their souls, but in reality, I don't think he'd have to work very hard at either of those pursuits.

31 Days of Monsters: Day Thirteen — The Jersey Devil

The Jersey, or Leeds Devil is said to haunt the Pine Barrens of Southern New Jersey.
Legend says that a woman known as Mother Leeds had been burdened with twelve awful children. Upon finding out she was pregnant a thirteenth time, she proclaimed that she wished the next child would be a devil instead of another ungrateful child. Upon being born, the cursed creature flew up the chimney and disappeared into the sky.
Now and again, people claim to see the creature. Skeptics claim the stories are either fabricated urban legends, or misidentification of native species in the area.

31 Days of Monsters: Day Ten — The Night of the Demon

The "Night of the Demon" is one of my favorite horror films. It's a great story of skepticism vs. superstition. A professional skeptic, played by Dana Andrews, travels to a conference in England where he is caught in the web of an Aleister Crowley-like magician. A piece of cursed parchment marks Andrews for death, but he remains skeptical to Carswell's power. Will he face the truth in time, and how will he save himself from ... THE DEMON!
This drawing is really a little misleading. The demon isn't really the villain in the film, it's Carswell. But the image of the demon has been a horror icon since the film came out, so I went with it instead of Carswell.
If you haven't seen the film, do yourself a favor and check it out. "Night of the Demon" was the original UK title. It was edited down to 83 minutes for U.S. release under the title "Curse of the Demon."
As a special treat, here's the trailer:

IMDB link for "Curse of the Demon"