Ryan Mercury is an Adept and Drake Shadowrunner. In the Dragonheart Trilogy it was revealed that he was trained by Dunkelzahn, to be used as a spy and assassin. He is a recipient of the Dragonheart, which is a four chambered model of a dragon heart, created from orichalcum. This artifact is one of great power, not normally able to be empowered by traditional magics until near the peak of the mana cycle. However, it is thought that Dunkelzahn's death was a colossal act of Blood Magic, used to empower the heart. He was also the recipient of "Wyrmstooth", a dagger in Dunkelzahn's will.