The Ommin harness
An Ommin harness was a type of cybernetic dedicated to providing a frail individual with increased maneuverability. In ancient times, a Sith king named Ommin wore an Ommin harness to support him.
After his defeat over Endor in 4 ABY, the Dark Lord of the Sith and Galactic Emperor Darth Sidious transferred his consciousness into a clone body on Exegol to survive. However, Sidious' immense power caused the body to deteriorate, eventually prompting the Sith Lord to wear an Ommin harness in support of his decrepit form.
In 35 ABY, Sidious wore the harness during his residence within the Sith Citadel on Exegol. During the Battle of Exegol, Sidious drained the Force energy of Ben Solo and Rey's dyad, restoring his physical form. As such, he subsequently dismounted from the Ommin harness, and was killed shortly after by Rey.
Ommin's mechanical exoskeleton in the Star Wars Legends continuity
The Ommin harness was reintroduced into the new Star Wars canon, albeit unnamed, in the 2019 sequel trilogy film Star Wars: Episode IX The Rise of Skywalker, written by Chris Terrio and J.J. Abrams. It was subsequently identified in the accompanying novelization, authored by Rae Carson and released in 2020.
Ommin's mechanical exoskeleton was originally introduced in the Star Wars Legends continuity in the first issue of the comic series Star Wars: Tales of the Jedi — The Freedon Nadd Uprising, written by Tom Veitch, illustrated by Tony Akins, and published by Dark Horse Comics on August 2, 1994.
- LEGO Star Wars: The Skywalker Saga
- Star Wars: The Secrets of the Sith