Ilum

Description
"I already know what the dark side feels like, in the forest on Starkiller Base. This isn't that."

- Rey

The frozen world twinkled with blue ice and snow, its natural surface frozen into a state of unchanging whiteness. It had a forest.

Its destruction left behind ruins.

History
Luke Skywalker took his class of Jedi students to Ilum for the first Gathering since the Clone Wars. Upon returning, Skywalker brought students Nellis, Kira, and Nashira to the Happy Grove on Endor and watched as they frolicked together.

The frozen world became Starkiller Base, a weapon used by the First Order.

Stormtroopers of the First Order's Stormtrooper Corps were stationed on Starkiller Base, and some were selected for pilot programs to serve as undercover agents for the First Order Security Bureau. FN-2187 served as a Janitor Second Class in Starkiller Base's Precinct 47 until he was promoted out of the Sanitation Engineering Corps to serve as a stormtrooper of the FN Corps.

Resistance Era
"And, on Starkiller Base, I felt...if the surface hadn't shifted us apart, I might have ended him there. How can a temptation like that be anything but a passion a Jedi shouldn't feel?"

- Rey, to the spirit of Obi-Wan Kenobi on Kylo Ren

The Battle of Starkiller Base.

Rey dueled Ren on the frozen surface, fighting him on the edge of a cliff and hearing the voice of Maz Kanata, telling her to let the Force in. She bested Ren, though refrained from killing him despite hearing antoher voice in her head urging her to do so. The planet's surface was wrought apart in that moment, taking the choice out of her hands.

Several leading figures in the First Order made it off the base aboard the Star Destroyer Finalizer.

Legacy
"It made me wonder...he was the Starkiller Kid, now Han 'sposed to have bought it on somethin' called Starkiller Base...you don't think maybe there's some connection there?" "It's a big galaxy, Jax. Starkiller is a very common name. Hell, I should start calling our clients Starkillers&mdash;they'd probably like that better than 'antilles'."

- Jaxxon and Amaiza Foxtrain, on Jimm "the Starkiller Kid" Doshun

Following the battle, "Snap" Wexley prepared for another reconnaissance mission to the ruins of the frozen world, in order to detect the unique hyperspace signature of the Finalizer in the hope of tracing it back to Supreme Leader Snoke's location, or otherwise attacking the vessel itself. The Resistance heard rumors that the First Order was creating other weapons in the Unknown Regions that would put Starkiller Base to shame.

While commiserating over the death of Han Solo, former Star-Hoppers Jaxxon and Amaiza Foxtrain discussed Solo's demise on Starkiller Base and compared the weapon's name to their old accomplice Jimm Doshun, known as "the Starkiller Kid". Though Jaxxon wondered if there was some connection, Foxtrain stated that Starkiller was a common name, and considered using it to refer to the antilles catered to in the Vibrating Ring brothel on Coruscant.