Bahamut

Known as the platinium dragon, Bahamut is not typically considered a member of the Creed of the 21, and instead regarded as a 'lesser' deity. Most Dragons would however find this an insult, as they believe Bahamut and Tiamat created the first world (as described in the draconic song Elegy for the first world). They do however treat Bahamut and Tiamat more like rulers than deities, beliveing themselves to be as powerful as the gods.
Bahamut is typically revered as a champion of justice and nobility, and is the patron of many paladins.