Metallic Dragons

Metallic dragons seek to preserve and protect, viewing themselves as one powerful race among the many races that have a place in the world.
Metallic dragons covet treasure as do their evil chromatic kin, but they aren’t driven as much by greed in their pursuit of wealth. Rather, metallic dragons are driven to investigate and collect, taking unclaimed relics and storing them in their lairs. A metallic dragon’s treasure hoard is filled with items that reflect its persona, tell its history, and preserve its memories. Metallic dragons also seek to protect other creatures from dangerous magic. As such, powerful magic items and even evil artifacts are sometimes secreted away in a metallic dragon’s hoard.
A metallic dragon can be persuaded to part with an item in its hoard for the greater good. However, another creature’s need for or right to the item is often unclear from the dragon’s point of view. A metallic dragon must be bribed or otherwise convinced to part with the item.
At some point in their long lives, metallic dragons gain the magical ability to assume the forms of humanoids and beasts. When a dragon learns how to disguise itself, it might immerse itself in other cultures for a time. Some dragons are too shy or paranoid to stray far from their lairs and their treasure hoards, but bolder dragons love to wander city streets in humanoid form, taking in the local culture and cuisine, and amusing themselves by observing how the smaller races live.
Some metallic dragons prefer to stay as far away from civilization as possible so as to not attract enemies. However, this means that they are often far out of touch with current events.
Metallic dragons have long memories, and they form opinions of humanoids based on previous contact with related humanoids. Good dragons can recognize humanoid bloodlines by smell, sniffing out each person they meet and remembering any relatives they have come into contact with over the years. A gold dragon might never suspect duplicity from a cunning villain, assuming that the villain is of the same mind and heart as a good and virtuous grandmother. On the other hand, the dragon might resent a noble paladin whose ancestor stole a silver statue from the dragon’s hoard three centuries before.