The Underworld, known also as the Realm of the Dead, is part of the Mists and the realm of Grenth of the Six Human Gods and Raven of the Spirits of the Wild. All newly dead unguided souls arrive here when they enter the Mists from Tyria, where they are judged and sent to their final destinations. The underworld is divided into several sections, many overseen by one of the Seven Reapers or other lieutenants of Grenth such as The Judge. Among these sections is the Mad Realm which has been usurped by Mad King Thorn since his death in the ninth century of the Mouvelian calendar.
The Underworld was the realm of Dhuum until he was overthrown by Grenth who became the new God of Death. 250 years ago, the Underworld was attacked by the former god's army of dryders, ghosts, and skeletons. This army had ensnared the Seven Reapers and caused chaos in the Underworld, sending souls to torturous places like the Realm of Torment. To aid in the battle, adventurers were allowed access to the Underworld to assist Grenth's forces. However, some arrived to plunder the Underworld's riches instead.
During this conflict, Dhuum regained strength through any death in the Underworld, and eventually broke free of his chains. Though the Seven Reapers and some mortal allies did eventually manage to re-imprison him, the new bindings were inefficient and Dhuum managed to break free repeatedly from his imprisonment.
In addition to this, the constant traveling between Tyria and the Underworld caused the barrier between the two realms to weaken, allowing Godslost Swamp, as well as other areas, to be overrun with Portals to the Underworld. Throughout Tyria, several creatures from the Underworld could be seen coming from such portals up to the present day. The most common of these are Nightmares, but often imps and fleshreavers are seen as well.
|With the departure of the Six Gods, the gods' realms including the Underworld fell to chaos as demonic entities from the Mists made their way into places such as the Domain of the Lost. In addition to this, Balthazar and Palawa Joko had begun plundering souls from the Underworld in 1330 AE to increase the numbers of the Forged army, adding to the chaos that Grenth's servants struggled to contain. In a bit of irony, the Mad Realm has seen little change beyond rivalry between Mad King Thorn and his son.
In 1330 AE, a new portal to the Underworld appeared, and a mysterious spirit reached to mortal adventures with a plea for help to defeat an ancient foe threatening the realm. The spirit was eventually revealed to be Grenth's first follower, the Red Witch Desmina, who was assisted by the Seven Reapers and a squad of mortal raiders to defeat their mutual foe, Dhuum. The former god of death was eventually sealed within the Hall of Chains but with a great cost of the lives of the Seven Reapers due to Desminaäs alterations to the ritual, leaving the Underworld under the Red Witch's rule.
In 1331 AE, the Elder Dragon Kralkatorrik, having drained the magical energies of Balthazar in the Battle of Kodash Bazaar, managed to physically enter the Mists. For a year, the Elder Dragon feasted on the gods' realms, growing even more powerful as he battled Glint and her Mist Wardens, eventually consuming the Domain of the Lost and forcing human souls out of the afterlives with some souls seeking refuge within the Sanctum in Kormir's Realm of Torment. After a fierce battle at Thunderhead Peaks left Kralkatorrik severely wounded, Aurene and the Pact Commander managed to chase down the Elder Dragon and force him out of the Mists in 1332 AE, along with a section of the Underworld that fell through Aurene's portal into Tyria. The shattered sections of the Underworld, Fissure of Woe and Melandru's Lost Domain partially buried Kralkatorrik and formed the island of Dragonfall in the Unending Ocean.
- Mad King's Realm