Breath of Zehir
Ancient gray dragon, and traitor to his kind.
In the final days of the wars between Arkhosia and Bael Turath, a traitorous dragon rang the death knell. This vile beast is known as the Gray Worm. Through his treachery, the dragons and dragonborn of Arkhosia perished alongside the infernal empire of the tieflings, bringing ruin to both mighty nations and closing the chapter on their glorious and villainous histories.
The Gray Worm is an ancient gray dragon of immense size, but he is a shadow of his former might. For his part in the fall of Arkhosia, he was beaten, torn, and brought to the brink of death by his kin. He carries the scars still, suffering terribly from their vicious blows. The thorns and spikes bristling his body are broken and splintered. The gray plates protecting his hide are pale, almost translucent, and some are missing where the flesh of old injuries knitted imperfectly. An eye is missing, and half his teeth have rotted away.
Zebukiel appears to be a dragon near the end of his days. But he is cursed, unable to die until he is brutally slain, as were his people at the hands of heartless tieflings and their infernal allies.
Zebukiel was last glimpsed in the divine dominion of Tytherion, shared by Tiamat and Zehir, in deep conversation with a green dragon on one of Zehir’s ziggurats.