Orthos the Bounded

The first dragon born by the Draconic Reproductive Rite was given life by three Elder Wyrms - Amaranthus Argent, Radamantes Azure and Viscalante Topaz. Eir birth was momentous, not just as the first of the third generation of dragon, but as the first truly mortal being. The Titans were immortal, or at least eternal, although not divine; the Eladan had limitless capacity for self-renewal. Orthos the Bounded was born with a finite - albeit potentially vast - lifespan, and by eir birth caused time to come into being, since a mortal span could not be measured without it.
According to some philosophies, time and mortality are both tied to the Existence of mortal Dragons. This has led some to seek to destroy the dragons in the belief that this would free the Mortal Lineages from death. Others have tried to harvest time from dragon carcasses, using their body parts in elixirs of longevity. Obviously, this is no easy task, but dragons have always been solitary, and their hunters have included powerful Giants as well as eladrinate mortals.
Orthos was a melancholy creature, uniquely aware, and from the moment of hatching, of eir pivotal role in the universe. Of eir three parents, e must took after Viscalante, a typically morbid acolyte of Calmortivia, and e was a devotee of the Primordial Tropos. As the first creature for whom death was not merely a possibility, but a certainty, e was singularly driven to understand it.
It was Orthos who first proposed the theory of psycho-harmonic gravity and the effect of the colossal incursion on the Fate of the souls of the dead. It was also Orthos who deduced both the imminent rise and the burning necessity of a class of Fiend dedicated to absolute and brutal order.
For all eir brilliance and potential, Orthos emself was rather shortlived. E died - along with almost all of the elder wyrms - in the Sixth Battle of Ladon, when dozens of Colossi and a host of Outerfolk sought to break the heart of Aiaos.