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 Sea Leviathan was subdued and dragged into Devil's Crevasse to be eaten by the devilsquid.

Anatomy
The Sea Leviathan was a large, aquatic, worm-like creature with a green hide, four yellow eyes, a large tail used to propel itself through the water, a large mouth with multiple rows of sharp teeth and long tendrils surrounding it, and several rows of blister pods across its body that are used to drain the life force of its prey.

Abilities
Due to its size, the Sea Leviathan possessed immense strength and durability.

Despite its size, the Sea Leviathan possessed great speed that allowed it to outspeed prey and keep pace with underwater attack craft.

The Sea Leviathan was able to use the blister pods covering its body to drain the life energy of its 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.[5]  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.[1] 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.[1]