The Leviathan was present when the Galactic Republic and the Jedi Order lead Revan into a trap, and they sent a strike team to board his flagship in an attempt to kill or capture him. As the strike team, lead by Bastila Shan, reached the bridge and prepared to engage Darth Revan Malak ordered the Leviathan to fire at the bridge in an attempt to kill both Revan and the Bastila Shan. Though ultimately this attempt failed, it did allow Malak to seized control of the Empire.
Later during the Jedi Civil War the Leviathan was at the head of the fleet that devastated Taris, commanded by former Republic War hero and one of Malak's closest and most senior military officers, Admiral Saul Karath. Karath later stationed the Levithan in a hyperspace lane and captured the Ebon Hawk and it's crew Revan, Carth Onasi and Bastila Shan. After escaping from their captor the three stormed the bridge and killed Karath so that they could shut down the tractor beam and escape the ship, as the three headed toward the bridge they were interrupted as Darth Malak sought to prevent their escape, Bastila sacrificed herself so that Revan and Carth could escape.
- Star Wars: Knights of the Old Republic (First appearance)
- Star Wars: Knights of the Old Republic II: The Sith Lords (mentioned only)
- Star Wars: The Old Republic (mentioned only)