Vorthanak
Creature · Northern Reach · from Chapter 7
Vorthanak is the terror of the Frostspire heights and one of the mightiest living things in all the Reach: a vast red dragon, ancient and immense, whose fire can melt stone and whose shadow alone empties the high valleys. Red dragons are the proudest and most wrathful of the chromatic kind, and Vorthanak is the proudest and most wrathful of red dragons - save that something has gone wrong in the great wyrm's mind. It broods in its mountain lair in a fury that has curdled into true madness, guarding a hoard it no longer counts and a single treasure it can neither use nor relinquish, raging at shadows and intruders alike. What that treasure is, and why it has driven so mighty a creature to ruin, is a thing the boldest learn only by climbing to its lair - and the maddened dragon does not mean to let them leave with the knowing.