Metallic Dragons

Metallic dragons are a type of dragon distinguished typically by the color and composition of their scales, that is like that of various metals, hence the name. They are generally good, altruistic, and righteous creatures. Despite their relatively benign nature, metallic dragons are  also aggressive when threatened or challenged. They usually worship Bahamut, whom they regarded as their king.

Types

Although there are many metallic dragon species, the following are the ones known by the sages:
Gold Dragons Gold dragons are the most powerful and majestic of the classic metallic dragons. They are wise, lawful good foes of evil and injustice. Gold dragons are very knowledgeable and reclusive. They prefer stone lairs and have a cone of fire as a breath weapon.
Silver Dragons Silver dragons are regal, lawful good creatures who often take a humanoid form and live among humans and elves. Their breath weapon is a cone of freezing cold, and they normally lair in mountains. They are very smart and prefer not to fight unless necessary.
Bronze Dragons Bronze dragons are inquisitive dragons with a fierce appearance and a fascination for warfare. They will often seek to fight evil, and will join good-aligned armies in a humanoid form. They are lawful good, live in coastal areas, and have an electrical breath weapon.
Copper Dragons Copper dragons are born pranksters, jokesters, and riddlers. They are chaotic good and live in rocky mountains. Copper dragons have an acid breath weapon but prefer to avoid combat altogether, instead taunting and teasing foes until they leave.
Brass Dragons Brass dragons are extremely talkative and love the intense heat of deserts. They often engage foes and friends alike in hours of long-winded conversation. They avoid combat if possible, but will use their breath weapon, a cone of sleeping gas, to subdue foes if threatened. They are the weakest of the classic metallic dragons, but still chaotic good.
Mercury Dragons Mercury dragons are whimsical, impulsive creatures. They delight in unpredictability and are reputed to be mentally unstable as well.
Iron Dragons Iron dragons are powerful, dangerous predators. While most have a neutral alignment, some are actually evil.
Steel Dragons Steel dragons are sociable, clever, and curious, and they prefer the company of humanoids rather than dragons. They often clandestinely live in humanoid cities, and spend much of their time in a humanoid form. They are either lawful neutral or lawful good, and breath a cone of poison gas.
Platinum Dragons The rarest, largest, and most powerful of the metallic dragons, platinum dragons represent the epitome of the metallic dragons. Many believe that only one exists.