Entelexeia (始祖の隷長「エンテレケイア」 Shiso no Reichou / "Enterekeia"?) are a race of powerful creatures that reside on Terca Lumireis, representing one of the prominent, sentient races in Tales of Vesperia. They have the ability to absorb aer over time, balancing the amount produced by the aer krene. When an Entelexeia dies, it leaves behind a crystal called an apatheia. Apatheia were used by the Geraios Civilization to create blastia. The will of the Entelexeia is also contained in the apatheia. Every Entelexeia possesses a special region in his or her brain that enables communication with the Krityans.