Foijonin

Known as "The Poisonous King of Ofotore", Foijonin is a character in ancient Orcish mythology. According to folk tales, he was said to govern Ofotore, a vast unseen underground empire in caverns deep below Orceron's surface. Other stories describe him as having a monstrous, unnatural appearance and a slimy malformed body. A common legend was that unlucky travelers could find themselves falling to Ofotore through a fissure in the ground and get lost forever.

Obviously, no such being actually existed.