Silooth The silooth was a large Sithspawn beetle bred by the Sith Empire for use as a warbeast . Silooth were ferocious creatures that relentlessly attacked anyone or anything that strayed into their paths , spraying acid and using their powerful mandibles to crush their victims . The only deployment of the silooth in combat en masse was during the Battle of Kalsunor , when the Sith released the creatures on the planet Kalsunor and subsequently laid waste to the world . Afterward , the Sith continued to use the beetles on a smaller scale , and descendants of silooth transported to Kalsunor continued to inhabit the world thousands of years later . Biology and appearance . The silooth was a large , armored Sithspawn beetle that was bred by the Sith Empire , an interstellar fiefdom located within the Stygian Caldera . In their natural state , the silooth were no bigger than a womp rat , but as a result of mutation via Sith alchemy , they were enlarged to the size of a bantha , a common desert herd beast . A silooth had six legs , and its body was covered in a set of brown - colored , segmented chitin plates that served as a form of armor and were artificially thickened as a result of the Sith ' s manipulations . The carapace was covered by a set of chitinous points , and the creature ' s head was situated at the front of the carapace . The head featured two yellow eyes and a large jaw containing a set of yellowish , jagged teeth , with mandibles strong enough to crush most sentient beings . The silooth was adapted for battle , and each leg of the creature ended in a set of razor - sharp claws . The beetle was also capable of spewing acid from its mouth , spraying the substance at targets up to ten meters away . The acid was produced by a series of sacs contained within the creature ' s maw ; when it felt enraged or threatened , the silooth flexed its muscles to empty the contents of two internal sacs containing inert liquids into a third sac , where the two liquids combined to form a powerful acid . The third sac then contracted to spray the acid , and the beetle then could not spew the substance again for a short time until the sacs refueled . While they possessed excellent low - light vision , a silooth was not capable of seeing further than ten meters in front of itself , even during daytime . Behavior . The silooth were non - sentient creatures . Though in their natural state the creatures were docile swamp beetles , the Sith altered them to make them predatory and ferocious , with the dark side of the Force fueling their rage . A silooth relentlessly attacked anyone and anything that crossed its path and did not stop until whatever it was that had disturbed it was dead or destroyed . The creatures clacked their mandibles loudly before attacking and commonly fought by spraying acid and crushing enemies with their jaws . Silooth were difficult to control , and even their Sith creators found it hard to restrain the giant beetles . History . Created from a smaller species of beetle via the means of Sith alchemy , the silooth were bred by the Kissai Ninûshwodzakut — a group of Sith tasked with the creation of warbeasts — for use during a conflict in which the Empire had became embroiled . The silooth subsequently received their combat debut during the Battle of Kalsunor , when they were released en masse on the planet Kalsunor to breach the defenses of the world ' s cities and to wreak havoc and destruction . The plan was a success , with the silooth causing chaos and laying waste to the planet , allowing a force of Sith warriors sent in behind them to bring the battle to a conclusion and complete the victory for the Sith . However , in the aftermath of the battle , the Sith forces struggled to control the marauding silooth , and the Sith abandoned the world , leaving the beetles behind . By the time of the arrival of the Dark Jedi Exiles to the Empire in around 6900 BBY , the Sith held swarms of silooth in reserve in case they were needed during a future conflict . Furthermore , the Dark Jedi alchemist Sorzus Syn mentioned the creatures in her chronicle of her encounters with the Sith . However , the creatures ultimately ceased to see mainstream use by the Sith military , and the Battle of Kalsunor remained their only mass deployment . Records of the secret of silooth manipulation were kept within certain Sith holocrons , and , for the remainder of the history of the Sith Empire , it was not uncommon for one or two silooth to be in existence at any one time . Silooth in the galaxy . An army of silooth was left behind on the planet Kalsunor following the battle there , and for millennia afterward their descendants continued to prey upon whatever other creatures and beings they encountered . Kalsunor was not in the databases of the Galactic Republic , and the exact location of the planet was unknown to the majority of the population of the galaxy , though rumors circulated among fringer s of a world overrun by creatures that matched the description of the silooth . During the reign of the Galactic Empire , a Star Destroyer named " Silooth " saw service within the Imperial Navy , under the command of Grand Admiral Peccati Syn . Behind the scenes . The silooth was first mentioned in the 2001 roleplaying supplement " The Dark Side Sourcebook " , by Bill Slavicsek and J . D . Wiker , and it later received an entry within the compendium " The Complete Star Wars Encyclopedia " in 2008 . The creature was subsequently expanded upon in the 2009 " Jedi Academy Training Manual " sourcebook , which became the first source to visually depict the beetle , in an by artist Adam Gillespie . The creature was also mentioned in the 2010 reference book " " . The silooth was originally set to be mentioned within the 2003 " Star Wars Insider " article " " , by Abel G . Peña and Daniel Wallace , but the article was condensed prior to publication , and the reference to the silooth did not make the final cut . The original draft of the article revealed that Grand Admiral Syn symbolically named his flagship after the silooth following his conversion to the Church of the Dark Side , a phony religion established shortly after the Battle of Endor , in honor of his new faith . The naming of Syn ' s Star Destroyer as the " Silooth " was later canon ized by the 2012 reference book " The Essential Guide to Warfare " . A conflict exists regarding the number of limbs that the silooth possessed . While " The Dark Side Sourcebook " states that the creatures had eight legs , the images of silooth that appear in the " Jedi Academy Training Manual " and " Book of Sith : Secrets from the Dark Side " depict them as having just six . This article assumes that the beetles had six legs , because the latter two sources are the most recently published of the three books .