The Terentatek was a massive Dark Side creature that fed off of Force energy of beings. At one point, the terentatek were rampant throughout the galaxy, which instigated the Great Hunt. The terentatek were hunted down and nearly extinguished during the Great Hunt, but a few remained on worlds such as Korriban and Kashyyyk. Revan had to kill three terentateks on Korriban, one to free several students who had deserted the Sith Academy, the other two to pass the final test to become a Sith Apprentice at the Academy. On Kashyyyk, the terentatek had killed Bacca, the father of the Wookiee Chieftains, and his sword was lost inside its thick hide.