The servant of Kronos is a demonic creature spawned by Kronos while he is imprisoned in Tartarus. It is said to be more of an extension of Kronos' will than an individual being. After being ordered by Kronos to "make way for the Titans", it kills the Theocrat and assumes his form, and then deceives the Atlanteans into rebuilding monuments to the Titans and tearing down those to the Olymian gods, shifting the balance of power so as that the power of the Olympian gods can no longer hold the Titans in Tartarus. After Kronos is rebanished to Tartarus, his servant tries to escape, but is killed by Kastor.
The servant of Kronos is also referred to as "Kronny", a portmanteau of "croney" and "Kronos".