The Vessels for Apeiron's Essence were a family bloodline that Apeiron had engineered through Sith Sorcery and Sith Alchemy to have a specific genetic design, eventually giving birth every two generations a youth that was a physical and genetic replica of his first Vessel whom he had also created, it allowed Apeiron to have an infinite number of bodies every two generations in which Apeiron could transfer his essence into and continue the cycle eternally.