Catastrophe Dragon Lord

Catastrophe Dragon Lord (破滅の竜王) is a member of the Dragon Lords, the most powerful dragons in the New World.

Background
It seems that this dragon lord is already dead, as the "Thousand Miles Astrologer" of the Slane Theocracy predicted its revival.

Chronology
When it was predicted to be reviving, the Slane Theocracy had dispatched the Black Scripture, one of the six Scripture to prevent it from happening.