Ar tonelico
As completely artificial life forms, they only grew until they turned 18, and won't ever age or die. Eoria is the oldest living Reyvateil, who was 739 years old at the time the events of "Ar tonelico" 1 took place. As the general concept of the Cosmospheres wasn't yet invented by the time they were created, they differ from the Pureblooded β-types and Third Generations in the fact that they don't have a Cosmosphere (excepting for Frelia).