Guzzarott

In the earliest days of existence, before the Multiverse became an actuality, a flash of potential formed light and darkness. After that, two siblings assigned with watching creation came to be. Along with them, though, came a third being known as the Star Crafter. Unlike the others, it was set to watch over creations that would exist in the future. The Star Crafter established its home in the Star Frame, a hidden place inside the Phlogiston. For ages, he created cosmoi based on the dreams and terrors of every breathing entity. While the most stable creations became part of the main Multiverse, The Crafter would send its dragon to destroy the unstable worlds so their energy could return to the Frame and be managed over. The name of that dragon was Guzzarott. Eventually, his lust for destruction led him to kill his master and steadily corrupt the Star Frame. Because he was no longer serving his duty, the shifting worlds endured past their era and became part of the Shadowfell. Ultimately, Guzzarott placed his eyes on slaughtering the Prime Material Plane. He was able to come to Toril at one point, and when he did, the Cult of the Dragon worshipped him as a god next to Tiamat. Guzzarott's disciples began to quietly outfit commanded heroes by Gods' orders, to become the pathway for Guzzarott to enter Prime Material Plane once again from the Shadowfell. His servants, by now known as the Dragon Clan, planned to infect their bodies with each of the five heavy metals from the Shadowfell. In the meantime, their lord searched for allies for his movement through the different dark matter realities. His search led him to one of the worst creatures to ever exist; a conniving incubus bastard, Emperor Udomorn. Baiting him with the promise of destroying worlds beyond his own, this fiend became his second-in-command and gathered other evil mages, demons, and monsters to support them, forming the Shadow Masters. At a point, the deity Shar had promised power Guzzarott to draw him up into the light. Later, he returned to Authinein and waits until the world gets close to fully sinking into the dark. When Emperor Udomorn gives him the omen, he begins to roar out his cry, penetrating the dimensional barrier separating the positive and dark matter realities, summoning his dark army to overtake Illmythia. Facing their elements together, Stoana, Azarath, and Battleheart succeed in helping fight back against him, turning the tide of battle. Reaching the Black Frame, they managed to don the Adamantine Armor, the prime constituent of the Star Frame Trying to not succumb, Guzzarott reveals his last resort; using the combined power of the positive energy of his prisoner of the divine energy, Tiamat's heart's negative energy, and Udomorn's necro energy, he plans to leave nothing but darkness. After the boy explains that all living things have trace amounts of Adamantine, the heroes proceed to use this power to attempt to pull Illmythia out of the Dark. They failed. They fell into his trap and were succumbed to the monsters that Guzzarott used to conquer Illmythia and destroy the universe.