Nubia
Nubia used to be a major force in the dungeon, she ran the first known shop in the dungeon, the Jackal's Pleasure, and managed to hide the exitance of the Market Town for years, avoiding questions of where she got her goods and how she seemed to have support, until she announced a new store, and a new settlement, opening up the Golden Jackal in Market Town, claiming discovery rights of the city.
She exploited her position, power, and wealth to have an outsized claim over the creation of the Adventurer's Guild, including forcing Fort Verdant to take the name of Mermaid Cove Resort and Spa in order to sell it as a more money making venture, and 'graciously' allowing the Adventurer's Guild to use part of the facility for defensive perimeters.
During the events of the Second Exodus, she was found to have left Paradisium, assumingly with Jakk, Nubia, and Melora who all vanished at the same time, the event was enough of a change to unleash Solomea, a Dao that she had captured and enslaved to provide her power and wealth.