Sea Leviathan The Sea Leviathan was a semi - sentient form of Sithspawn , alchemically engineered by the Givin Vul Isen , a scientist in Darth Krayt ' s One Sith Order . Inspired by the original creation of the exiled Dark Jedi who became the first Sith Lords of millennia past , the Sea Leviathan was born in the depths of the aquatic Outer Rim planet of Dac solely to kill the native Mon Calamari species in accordance with Emperor Krayt ' s ordered extermination of the entire race . With assistance from the Quarren Sith Lord Darth Azard , Isen summoned the Sea Leviathan from the depths of Dac ' s Soheras Trench and unleashed it upon the seemingly helpless Mon Calamari , who had been detained in the Imperial Extermination Camp 28 . In 137 ABY , the same year of its creation , the Sea Leviathan met its demise when it was attacked by the Mon Calamari Rangers , led by Imperial Master Treis Sinde . Despite the Leviathan ' s successful massacre of many Mon Calamari , Sinde was able to coax a school of devilsquid with the Force into an attack on the Leviathan . Unable to defend itself against the assault , the monstrosity was subdued and dragged into the abyss of Devil ' s Crevasse to be ravaged by the devilsquid . Biology and appearance . The Sea Leviathan was an aquatic beast specially bred by the Givin Vul Isen , a scientist of Darth Krayt ' s One Sith Order , for life in the deep seas of the Outer Rim planet of Dac . It was a creature of considerable length and mass , being of far greater proportions than either the Aquatic Terrain Armored Transport or the Acklay - class mobile fortress , two vehicles used by the military of the Empire . The Sea Leviathan had pectoral fins that were on either side near its chin , as well as a taloned caudal fin for propelling itself through the waters of Dac . The Sea Leviathan had long tendrils surrounding a gaping maw filled with rows of long teeth . Like its terrestrial cousin , it had two sets of yellow eyes — one atop the other — and four nostrils in a similar arrangement . The Sea Leviathan had a green hide , in contrast to the purplish skin of its land - based kin . Cranial horns were situated on either side of its face and head , which gave way to the rows of blister pod s that began at the creature ' s neck and continued down the length of its entire body . The pods served as siphons of life - energy , as well as being the Sea Leviathan ' s primary means of attack . Because of special engineering on the part of the beast ' s creator , the Sea Leviathan only drew upon the energies of the Mon Calamari species ; its blister pods were not used to effect any other . Though bred on the planet Dac , the Sea Leviathan was not part of the native fauna . When encountered by the resident Mon Calamari , they recognized it as foreign and regarded the beast with terror before fleeing . Behavior and intelligence . Despite its considerable girth , the Sea Leviathan had incredible speed ; it was often able to out - swim its prey and was even able to keep pace with underwater attack craft . Like its land - based relatives , the blister pods with which a Sea Leviathan was equipped were used to siphon life energy from its victims . The beast actively hunted its prey , and when in close proximity , the blister pods resonated with a sickly green aura as they began to drain the life of the intended target . Due to Vul Isen ' s special engineering , however , the Sea Leviathan only activated its blister pods when hunting Mon Calamari and did not use them when combating other sentient or non - sentient species . Should the beast be attacked by other creatures or beings , it relied only on its size , speed , and teeth as a means of defense . Sea Leviathans were not a natural occurrence , but were instead a variation of the terrestrial Leviathan that was created through alchemical practices millennia before by the exiled Dark Jedi of the Hundred - Year Darkness . In accordance with Darth Krayt ' s ordered extermination of the Mon Calamari species , Sith scientist Vul Isen engineered a semi - sentient beast that was not only indulgent upon the life energy of its victims but was also able to assimilate their sentience as well . Each absorbed life allowed the Sea Leviathan to think more like a Mon Calamari ; it then instinctively located them in their dwellings and commenced massacring them in kind . The power of the Force was required to bring the beast to life . Through their mastery of the dark side , Vul Isen and his colleague , the Quarren Sith Lord Darth Azard , imprinted parts of their own consciousness onto the Sea Leviathan ' s mind to awaken it from its vegetative slumber . Once alive , Lord Azard was concerned that as the beast harnessed the sentience of more Mon Calamari , it would turn on the Sith ; however , Isen assured him that because their mental imprints were part of the Sea Leviathan ' s mind , it would ignore them and only hunt its intended prey . History . In the year 137 ABY , Dread Lord Darth Krayt ordered that ten percent of the entire Mon Calamari species was to be exterminated for their support and allegiance to the Galactic Federation of Free Alliances , the former dominant galactic government . He commissioned one of his many Sith Lords , the Quarren Darth Azard , as the overseer of his genocidal will . Azard traveled to the Mon Calamari homeworld of Dac , where scientist Vul Isen was also sent and ordered to expedite the success of the Quarren Sith ' s mission . Lord Azard was content with rounding up the Mon Calamari in detention camps and simply letting them all die of starvation or disease . Isen , however , had more creative methods of committing genocide and was eager to implement one of his schemes to satisfy Lord Krayt . After consulting the Chagrian Sith sorcerer Darth Wyyrlok , Isen created an aquatic version of the land - based Leviathan to unleash upon the helpless Mon Calamari . Once his oceanic Sithspawn was ready , both he and Darth Azard used the Force to bring the Sea Leviathan out of hibernation from the Soheras Trench and then set it upon a group of Mon Calamari that had been detained in the Imperial Extermination Camp 28 . Impressed by the efficiency with which the Leviathan consumed its prey , the two Sith unleashed their handiwork into the waters of Dac as bait for the Mon Calamari Rangers , freedom fighters who had assumed the responsibility of protecting their kinsfolk from the attacking Imperial Sith . Isen and Azard followed the Sea Leviathan in their AT - AT swimmer to Devil ' s Crevasse on Dac ' s ocean floor , where the beast interrupted a reconnaissance mission undertaken by two Mon Calamari Rangers in Krakana underwater fighter s . Caught completely unawares , the pair attempted to record as much information as possible about the unrecognized monstrosity before one of the Rangers , Adriphar , created a diversion in order to allow his partner , Shonmai , to escape and report their findings to the remaining Rangers . Though Shonmai successfully got away , Adriphar did not — his Krakana was disabled , and he was killed as his life energy was absorbed by the Sea Leviathan . The creature ' s presence was exposed when Shonmai arrived back at the Ranger Grotto and alerted her fellow Rangers , who were under the leadership of the Imperial Knight Treis Sinde . While Isen , Azard , and their Sithspawn prowled around Devil ' s Crevasse , the Rangers devised a plan of attack that involved sacrificing the refugees to the Leviathan while they attempted to disable the Sith ' s AT - AT swimmer . They met the Sea Leviathan just as it approached the outskirts of the Crevasse , and a battle quickly ensued . The beast devoured several of the Mon Calamari refugees , while the Rangers , under Sinde ' s guidance , attacked and disabled the Sith AT - AT . The Sea Leviathan was then mobbed by the Rangers in an attempt to save the remaining refugees , but their flight was halted when the devilsquid — who resided within the Crevasse and had been disturbed by the commotion — appeared . Before the devilsquid could join in the fray and also besiege the refugees , Master Sinde used the Force to command them into action against the Sea Leviathan . Because of its programming to attack the sentient Mon Calamari , the Leviathan did not focus on the squid as they swarmed it . Meanwhile , several of its blister pods were ruptured and destroyed by Sinde , hindering its effectiveness against its desired prey . Unable to withstand the combined assault of the devilsquid , the Mon Calamari Rangers , and the Imperial Knight , the Sea Leviathan was dragged into the abyss of Devil ' s Crevasse , never to be seen again . Behind the scenes . The Sea Leviathan first appeared in the ninth " " story arc , " " , written by John Ostrander and drawn by Omar Francia . The beast was a take on the land - based Leviathan that was created by writer Kevin J . Anderson for his " " comic story arc . The Sea Leviathan was used by Ostrander as a plot device to reintroduce the Genocide of Mon Calamari , an event that first appeared in " " , also by Ostrander . To date , the Sea Leviathan ' s only appearances remain within " Fight Another Day " .