The Time-Keepers are the creation of He Who Remains, the very last director of the Time Variance Authority (TVA) existing at the final common endpoint of all surviving realities in the multiverse, just prior to the heat death of the universe. The Keepers would serve two purposes. First, they would be a gift to the future, teaching those of the next universal cycle how to avoid the errors of the past. Second, they would serve as living batteries of chronal power, the accumulated (and growing) energy of the TVA's eternity of existence being used to ensure quality of life for retired TVA employees.