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.

Text and facts from the “Sea Leviathan” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.