Fifth Quadrant

The Fifth Quadrant is the unofficial name of a massive construct built by Dr. Vada. Kept secret from the remainder of the universe, Dr. Vada hides the Fifth Quadrant above the Fourth Quadrant, where it can be safely hidden away in a part of the universe that is thought to be uninhabited. The Fifth Quadrant contains many different ecosystems and cities all built by Dr. Vada to study and contain life.