sentences:  The name of Zathras' species and homeworld were never revealed; in "War Without End", Zathras is seen living on Epsilon III and helping take care of the Great Machine with one other member of his race, although there is no evidence that this is their actual homeworld.The oldest Zathras is the oldest living (110 years old) caretaker of the Great Machine, in the service of the mysterious and messianic "The One" when first appearing.A slightly shaggy, slightly hunchbacked humanoid, Zathras is prone to deadpan delivery of somewhat cryptic, somewhat humorous, generally self-pitying statements, such as "Zathras is used to being beast of burden to other people's needs.