Mahadeva was the King of the Gods, and the Maker of the Whorl. It is said that he set the Whorl upon the Endless Void and populated it with the Gods and with his favored mortals. For countless years he presided over the Whorl. It is said that during this time his Angels consorted with humans and wisdom and knowledge of the arcane arts was at its height. Beginnings and Endings, Birth and Death, were his realms, with all life in between the domain of his wife Parvati, Goddess of the Land. It is generally held that the other four major gods are the four children of Mahadeva and Parvati.
His eldest son, Surya, god of the Sun, started a rebellion against his father (see Ancient Lore). In the aftermath of the war, Mahadeva was slain. His aspects were assumed by Parvati (who was, arguably, driven mad in the process).
Mahadeva is still venerated, although nobody expects answers to their prayers. His name is most often invoked reflexively by humans annoyed at the other races. Mahadeva's Angels continue to fly in the skies. They no longer consort with the people of the Whorl, going about their mysterious duties. The gods are, in general, silent about them and their purpose in Mahadeva's absence.