Torog

Torog is the evil god of earth and torment. He is the patron and creator of the duergar. Before the Dawn War, Torog was more fascinated with the underdark than anything above ground. He created vast networks of caves and tunnels and filling them with terrible monsters and beasts. Moradin fought with Torog because this was the home he chose for his creations as well. Torog was defeated and imprisoned in the underdark, where he is unable to leave. Known now as the King that Crawls, Torog delights in seeing others imprisoned and tortured as he is.

When Moradin took darkvision from the dwarves to force them to abandon the underdark, Torog made a deal with a one rogue kingdom that became the duergar. He assisted Lolth in bringing the drow underground, and it is believed that they scheme together.