Metallic Dragon

Metallic Dragons come in 5 general colors: Brass, Copper, Bronze, Silver, and Gold.
Metallic Dragons were the protectors of Valendrall during the Dragon Crisis, with one reportedly organizing the survivors against the Chromatic Dragons which controlled the region.
Aside from this, little information currently exists about Metallic Dragons aside from the characteristics that we know all dragons share.
It should be noted that Gold Dragons have not been confirmed to exist. Gold Dragons have only been reported by those who claim to have seen one or otherwise "know" of one's existence. To date, no proof has ever been produced. Regardless, the gold coins most popularly in circulation around the Sword Coast have been named "Dragons" which means Gold Dragons do technically exist, but not in the sense we would otherwise expect.