The Bottom of the World
The Great Evil plagued the lands around Rellington 1,000 years ago.
According to The Elder of Arcavora the Great Evil very large, “perhaps the size of a kingdom”, and is either a dragon or a demon. It was trapped by the One Hundred Heroes 1000 years ago after terrorizing the land for several months. The Gods themselves dug a hole and the Heroes lead the Great Evil into it and then chained it. The longest of those chains reaches into the throne room in the keep at Rellington.
The Great Evil is painted on the walls of Rellington, depicted as a giant demon.