Asgorath

Asgorath, also known in the Outer Planes as Io, is the chief deity worshipped by dragons. He is supposed to encompass all alignments (being worshipped by every variety of dragon) but is most often regarded as neutral. His symbol represents totality. In draconic mythology, Asgorath created the universe itself and then dragonkind, that being the only time when he manifested himself as he hasn't done so since. He does, however make his existence felt as a powerful presence in the minds of other dragons.