- "Ylesia's most profitable export is glitterstim spice."
- ―Kyp Durron
- "The population of Ylesia is very scattered. The civilians were slaves of the Hutts, working in glitterstim packing plants scattered over the countryside."
- ―Traest Kre'fey
Ylesia was the homeworld of the nonsentient reek, an ungulate species raised on ranches on the planet and its Codian Moon. The creatures were exported to numerous worlds, including Ithor, Iridonia, and Geonosis, resulting in various breeds used for a wide array of purposes.
Old Republic Era
- "Let's see, three bricks of spice out to Ylesia, then with the turnaround...um, no, no, that won't work..."
- ―Quello going over his lists of shipping
Four thousand years before the Galactic Civil War, Ylesia was already one of the major spice-production worlds in the galaxy. The product was shipped from Kessel or Ryloth and processed, and then a number of spice runners made the journey from there to Nar Shaddaa, bringing warm slave bodies on the return trip to work the Ylesian spice factories.
In 10 BBY, the Besadii Hutts controlled the planet and purported it to be a religious retreat, but it was in fact a scheme to trap willing slaves in order to process spice. The Besadii would use male t'landa Til to produce what they called the Exultation, a contrived religious ceremony that would grip most sentients in a powerful and addictive pleasure.
The t'landa Til of Ylesia would go on "missionary" journeys, giving the Exultation to crowds. This taste of the Exultation was often enough to ensnare those who were looking for something more to life. Workers were tricked to the planet, becoming "pilgrims" of the "Cult of The One and The All." The pilgrims were then exploited as slaves in the planet's numerous spice-processing factories. One such victim was Bria Tharen. During this period, the planet was ruled by High Priest Teroenza, the leader of the cult. Han Solo's first piloting job was on Ylesia.
During the following years, the fledgling Rebel Alliance mounted several more or less successful attacks on the planet, disrupting the spice production and reducing profits but generally causing little lasting damage. Rebel and Imperial forces were engaged in a skirmish there in 1 BBY, resulting in the capture of the frigate Salvation. In 0 BBY, however, a Rebel and smuggler raid, led by Han Solo and Bria Tharen, succeeded in shutting down the factories, at least temporarily, and freeing the slaves, and Teroenza was killed.
Yuuzhan Vong War
- "There haven't been any Yuuzhan Vong fleets in orbit since the original conquest, though sometimes Vong fleet elements, mostly coralskippers and their transports, transit the Ylesia system on their way to somewhere else. What we have instead is the Peace Brigade military itself — the Yuuzhan Vong are trying to build up the Brigaders as an 'independent' government, with their own fleet. They're also using glitterstim revenues to hire mercenaries."
- ―Kyp Durron
During the Yuuzhan Vong War, Ylesia was taken from the Hutts. It was given to the Peace Brigade to use as their headquarters. A raid by the New Republic, in which Jaina Solo was present, resulted in the capture of the Peace Brigade president, Thrackan Sal-Solo.
Behind the scenes
The Paradise Snare states that Ylesia had no moon; however, The New Essential Guide to Alien Species states that the Codian Moon was a moon of Ylesia. The Essential Atlas presumably places the Codian Moon in the Codia system on the opposite side of the galaxy.
- Star Wars: Knights of the Old Republic II: The Sith Lords (Mentioned only)
- Star Wars: The Old Republic (Mentioned only)
- Star Wars: The Old Republic: Rise of the Hutt Cartel (Mentioned only)
- The Paradise Snare (First appearance)
- The Hutt Gambit
- The Force Unleashed II novel (Mentioned only)
- Rebel Dawn
- Underworld: The Yavin Vassilika (Mentioned only)
- Scoundrels (Mentioned only)
- Scoundrels audiobook (Mentioned only)
- Star Wars Journal: Hero for Hire (Mentioned only)
- The New Jedi Order: Agents of Chaos I: Hero's Trial (Mentioned only)
- The New Jedi Order: Agents of Chaos II: Jedi Eclipse (Mentioned only)
- The New Jedi Order: Balance Point
- The New Jedi Order: Edge of Victory II: Rebirth (Mentioned only)
- The New Jedi Order: Destiny's Way (Mentioned only)
- The New Jedi Order: Ylesia
- The New Jedi Order: Force Heretic II: Refugee (Mentioned only)
- The New Jedi Order: The Final Prophecy (Mentioned only)
- The New Jedi Order: The Unifying Force (Mentioned only)
- Millennium Falcon (Mentioned only)
- Millennium Falcon audiobook (Mentioned only)
- The Essential Guide to Planets and Moons
- Aurra Sing: Dawn of the Bounty Hunters
- The New Jedi Order Sourcebook
- The New Essential Guide to Alien Species
- The New Essential Chronology
- Star Wars Fandex Deluxe Edition
- The Complete Star Wars Encyclopedia
- "Han Solo: The Early Years" – Star Wars Insider 106
- Star Wars: The Official Starships & Vehicles Collection 24
- Star Wars: The Clone Wars Comic UK 6.36
- The Essential Atlas
- The Essential Reader's Companion
- Star Wars: Edge of the Empire Core Rulebook
- Star Wars: Age of Rebellion Core Rulebook
- Lords of Nal Hutta