Mortis

"I don't understand. What is this place?''" "''Unlike any other. A conduit through which the entire Force of the universe flows."

- Obi-Wan Kenobi and the spirit of Qui-Gon Jinn

Mortis was an ethereal realm in an uncharted region of space. The realm was covered with lush forests and molten caverns, with floating mountains above the surface. The only known beings who inhabited the realm were three Force-wielders locked in an eternal struggle for dominance over one another: the Son, who represented the destructive and deadly aspects of the realm; the Daughter, who represented peace and creation on Mortis; and the Father, who maintained the balance of the Force between them. Mortis was therefore a fulcrum for the galaxy and a conduit through which the Force flowed.

During the Clone Wars, the Father drew Anakin Skywalker, Obi-Wan Kenobi, and Ahsoka Tano into the realm. The Father believed that Skywalker was the Chosen One, and that he could maintain the balance of the Force between the two children once the Father died. This led to a struggle between the Force wielders and the three Jedi, culminating in the deaths of all three wielders and the restoration of balance on Mortis.