Ella, the AI that guards the lost terminal, is responsible for guarding the entire lost terminal. Due to her super learning ability, Ella has evolved her own personality and can perform most complex calculations to guard the lost terminal. As the guide AI of the labyrinth fortress, the AI guides Kiana Kaslana and her team's actions, but due to the limitation of its own program, they only let them circle around the fortress, and failed to enter the fortress.