Kef Bir

Kef Bir was an ocean moon orbiting the gas giant Endor in the Endor system that was the homeworld of Jannah, a human female freedom fighter who, by the time of the First Order–Resistance war, led a tribe of brave and noble warriors. It was where the wreckage of Death Star II was located.

History
In 4 ABY, a successful attack by the Rebel Alliance on the Death Star II resulted in its destruction. The remaining wreckage, including what was left of the superlaser dish and the Emperor's Throne Room, fell onto Kef Bir.

In 35 ABY, Rey, Poe Dameron, Finn and Chewbacca arrive on Kef Bir following directions found on a Sith dagger and translated by C-3PO, to secure a Wayfinder to Exegol belonging to Darth Sidious aboard the wreckage of Death Star II. There, they meet Janna, a former First Order Stormtrooper who resided on the ocean moon, along with her tribe. Rey finds the Wayfinder in the Emperor's Throne Room, but is confronted by Kylo Ren, who destroys it. The two duel, with Rey stabbing Ren as he senses the death of Leia Organa. Rey heals him and takes his TIE/wi modified interceptor, leaving him stranded aboard the Death Star III's wreckage.

Behind the scenes
Kef Bir was first seen in the final shot of the first teaser for the upcoming Star Wars: Episode IX The Rise of Skywalker film. The teaser was officially released to the public on April 12, 2019.

On October 23, 2019, the Disney Parks Blog announced that the Star Tours: The Adventures Continue rides at Disneyland, Walt Disney World, Disneyland Paris and Tokyo Disneyland would be updated to include a scene set on Kef Bir, similar to previous updates that added planets featured in The Force Awakens and The Last Jedi. That blog post also confirmed that Kef Bir was the "ocean moon" seen in the trailer for The Rise of Skywalker, and that the ride update will go live the same day the film's premiere, December 20, 2019.

Appearances

 * Star Wars: Episode IX The Rise of Skywalker 
 * Resistance Heroes

Non-canon appearances

 * Star Tours: The Adventures Continue