The Lifeless

Overview
The Lifeless are deceased bodies given "life" by the Lifeless Queen. However, none of the Lifeless have any sentience, and are unable to use Kai Energy.

According to an ancient text assumed to be written by the Lifeless Queen, the dead cannot be revived after a certain amount of time. The Lifeless are just golems without feeling or emotion, and are simple puppets to the one who raises them.

Nobody, aside from the Lifeless Queen, have any clue how to raise the Lifeless.