The main religion of Grey Sky is a monotheistic church. Although it is divided in many sects, the dogma is generally untouched. The Galamical church worship God, an omniscient being who is said to watch over humanity. However, many sects believe that God is not alone, dipping into polytheism. In fact some sects (generally labeled as heretical) believe evil is as strong as good. Some lesser religions, such as the ancestor worshipers of the old days, are spread among the lesser people of Grey Sky.