One Head Becomes Two

Ladneg the lemure and other insignificants

 
Demongorgon is a Prince of the Abyss, one of the more powerful, if not the most, of all the demon lords.  Many of the demon lords have been around a very long time.

Some time after the Dawn War, thousands, maybe
tens of thousands of years later, the gods and their angels warred with the demons.  They formed a special cadre of angels that fought the demons.  These angels became despoiled during their conflict with the demons, and would ultimately become fallen angels, and then devils, but that is another story.

The demon lords and devils have long histories, and the history of Ladneg talks about how Demogorgon nearly lost his head, and in the process became even mightier.