Bahamut

Bahamut is a Deity widely worshipped by Dragonborn in The Old World. Along with his twin sister, Tiamat, he is one of two gods venerated in Draconic Dualism, the state Religion of Tymanther. He is depicted as an immense Platinum-scaled Dragon and exemplifies courage, heroism, and all other qualities to which Dragonborn warriors aspire. His holy symbol is a Platinum Dragon's head.

There is also evidence of Bahamut's presence in The New World, as the Silver Dragon, Baerithyn Rex, asserts that the Draconic Civil War was fought between his worshipers and those of Tiamat.