Bahamut

Bahamut is the dragon god of justice; he is an immortal platinum dragon with a magical blue aura. His palace is located in the outer plane of Celestia. Legends say Bahamut only enters the material plane of Daledon to help fight for justice against evil beings. He was last spotted in Daledon during the The Dragon War, when he was summoned by King Amon Draconis with The Crown Of Wishes to defeated the ancient evil dragon Klauth. Bahamut had sworn an oath to never kill his own kind, and spared Klauth's life. Klauth was later killed by King Amon Draconis.