Kuro

Kuro is a player character and one of the freebooters at the center of the game. She is a dark elf from Diomira, and the Witch. She is dedicated to proving that she is a powerful and evil witch to the other dark elves, particularly Surtur. She currently resides in Ditchwater Manor in the Ditchwater Slums.

As a plane
After looking herself up in the Planarch Codex, the Codex's magic caused her to be categorized as a plane of existence. On the verge of being consumed by Dis, Kuro and her freebooter allies managed to evacuate the spiderlings to Dis, saving her from consumption by the ravenous city.