Star Wars: Shades of Good and Evil
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.
Terentatek resembled rancors, 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. When the dark side was weak in the galaxy, terentateks could hibernate and remain dormant for many years, only to return when the dark side was strong again
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 user, so they were deposited on Tython’s moon of Bogan where they prowled the surface.
Millennia later, while the link between the Terenta and the Terentatek was forgotten, some sources reported that the modern version of the beast evolved on Korriban, where the power and presence of the dark side gradually distorted their shapes and corrupted their minds. Some other sources, however, reported that they were first created on Yavin 4 by Exar Kun, as one of his experiments in 3,997 BBY. Terentatek’s hide was immune to 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. 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.