Cinnabar

Shadeholders are dragon skins embodied by the Shade. When a dragon dies, the Shade can reincarnate it and use the body to its own benefit. They are essentially the Shade with the ability to walk, talk, and think. They have a hive mind ultimately controlled by the first Shadeholder to ever exist - a Skydancer named Naomi. They are more intelligent in groups, but they often prefer to work alone. A Shadeholder is able to cause conflict in clans by shadetouching a dragon. If a Shadeholder causes a war to break out between clans, any dragons who are killed in the battle surrender the years of life they would have had remaining had they not died in battle to the Shadeholder who caused it. Causing conflict is how Shadeholders keep their dragon bodies youthful. Shadeholders are tricky and maniacal, and they believe that they are god-like. They refer to themselves as "Prophets of the Shade" or simply "The Prophets." It is common for Shadeholders to take after bits of their body's original owner's personality. Even with the pieces of individuality that they express, a drone Shadeholder is nothing without its hive queen.

You can read more about the appearance and lore of Shadeholders and how to acquire one here.
Shadeholder subspecies: http://pastebin.com/sTb5FPNP