Ashardalon

An extremely old red dragon, Ashardalon had an appearance that diverged somewhat from usual ancient dragons of his kind. He possessed unusual demonic features and a scar on his chest in the shape of an enormous winged humanoid. Ashardalon was regarded as a self-important dragon with an almost desperate attachment to his own life. He was willing to go through whatever means necessary to prevent his own death.  After suffering a mortal wound, Ashardalon attempted to extend his life by binding a balor called Ammet to his chest in order to function as a second heart. However, his injuries were too extensive for the balor's power to keep Ashardalon alive. He vanished shortly after and was presumed dead.