Terentatek / Legends Terentatek were creatures which fed off the blood of Force - sensitives , and inhabited caves and tombs strong with the dark side of the Force . Several guarded the entrance to a section of Naga Sadow ' s tomb . Biology . Terentatek resembled rancors , although smaller ( approximately one - fourth the size of a fully - grown bull Rancor , ) except they had a number of spines growing from their backs and a pair of flaps , or tusk - like projections attached to their mouths . They also had massive claws ( four to a hand ) . The tusks and claws of a terentatek were highly venomous . It was theorized that they were once rancors , subjected to mutations by the Sith , and that when the dark side was weak in the galaxy , terentatek would hibernate and remain dormant for many years , only to return when the dark side was strong again . Subspecies . By the time of the Cold War , the terentatek had developed , and one larger subject , possibly a variant of the species , was found in the Tomb of Naga Sadow protecting the Dashade Chamber , the Terentatek Mauler . History . The first prototype of what would become the fearsome terentatek was first seen on Tython , centuries before the rise of the Republic , when the Je ' daii Master Quan - Jang , trying to craft a creature able to sense explosives during the Despot War , alchemically created terenta . However , the terenta eventually developed a taste for Force - enriched meat , and thus began targeting Force - users . At some point , they were deposited on Tython ' s moon of Bogan , where they prowled the surface . The first recorded encounter with a modern terentatek occurred on the jungle world of Dromund Kaas in 4904 BBY , when the link between the terenta and the terentatek was long forgotten . While clearing a section of the planet of jungle and hostile wildlife , the Human Odile Vaiken fought and slew a modern terentatek . Some sources reported that the modern version of the terentatek evolved on Korriban , where the power and presence of the dark side of the Force gradually distorted their shapes and corrupted their minds . The Sith Lord Exar Kun was also reported to have created terentatek through Sith alchemy . A terentatek ' s hide was highly resistant — in some cases even immune — to the effects of the Force . They became the most dangerous of the creatures bred by the Sith . They were so powerful and dangerous to the Jedi that they were often dubbed Jedi Killers , and Kun used the monsters to destroy Jedi outposts on Tatooine , Kashyyyk , and Tython . During an event known as the Great Hunt , numerous Jedi traveled throughout the galaxy to try to exterminate the terentatek . Jedi were often sent in groups of two or three to battle these beasts , and the Jedi of the group had a strong Force bond between them . This was done so that the group could strengthen itself from the dark influence prevalent in the lairs of the terentatek , and as it had to rely on its weaponry skills alone due to the almost complete Force immunity of the terentatek . None of the hunts were completely successful , however . Even though the Jedi seemingly exterminated a majority of the terentatek each time , the waxing of the dark side would trigger the terentatek to come out of hibernation and repopulate the galaxy . Such events included the rise to power of Revan , Malak , and Emperor Palpatine . Terentatek were also found on Tatooine , Kashyyyk , Onderon , Dromund Kaas , Tython , and Yavin 4 . During the Jedi Civil War , Revan and his companions found and killed a terentatek in Kashyyyk ' s Shadowlands while searching for the Star Forge . It had been a ceremonial beast used in an old Wookiee ritual . In one such ritual many years ago , Bacca ' s Ceremonial Blade had broken from its hilt and become embedded in the creature ' s flesh when a headstrong Wookiee chieftain had attempted to slay it — the blade was recovered by Revan . Revan also single - handedly fought and killed two terentateks in the tomb of Naga Sadow . There was also a terentatek in the Shyrak Caves on Korriban , which turned out to be near the entrance to the tomb of Ludo Kressh . Teneb Kel fought and killed a terentatek on the planet Lenico IV in 3678 BBY . One more developed variant was found in the Tomb of Naga Sadow during the Cold War , but it was killed by the recently released Khem Val ( imprisoned in the same tomb ) and a powerful Sith acolyte . Behind the scenes . BioWare used the model from " " as the basis for the terentatek in " " . In the game " " , a terentatek is found on Kashyyyk following Luke Skywalker , Han Solo , and Chewbacca after stealing an Imperial encryption module .