The Erdoras were made by Talun in the beginning of the first age. Their names were Arden, Verda, and Milcoth. They were granted powers to create lands within the boundaries of Erdor. They were also allowed to create a race that would be their chosen people. Arden created the dwarves and built underground homes for them, Verda created the Elves and crafted tree homes for them, and Milcoth created Orcs and goblins.
Milcoth rebelled aginst Talun's ways, and in the end he was punished and made mortal, so he could no longer torment the peace of Erdor.
The Erdor later put their spirits within specific landmarks placed around their lands. Milcoth did not, he built a fortress called Golmath, where he waited and grew stronger.