Mrs. Ross

The first time Sungyoon meets the siblings, they bring a monster to him. This causes him to dislike them. After they take responsibility, Sungyoon and the siblings team up and in half a year, they go through the whole beginners labyrinth together.

Plot
A great connector who helped her company reach its current position. She died in a low level Labyrinth. Her body, gems, and devices were not found. She wrote that she had found something odd within the labyrinth in her diary before her death.

She fought a Golem and died due to blood loss.

Labyrinth
Personal Labyrinth - low level labyrinth with 8 levels. Tim and Emily refused better labyrinths in favour of this labyrinth due to it being their mothers personal labyrinth. They use it during their holidays.