Darth Sidious' Eta-class shuttle
The personal shuttle of Darth Sidious, the Sith Lord, during the latter period of the Clone Wars was a customized Eta-class shuttle. He employed this vessel for journeys such as the one to Mandalore, a planet, where he aimed to stop his previous apprentice, Maul, from gaining control.
Subsequently, Sidious utilized the shuttle to leave the Spire, which was a fortress under the control of the Confederacy of Independent Systems located on Stygeon Prime.