Osisis Station was a space station. It was located in the orbit of a ringed planet within the Regani sector.
The station was owned by a Besalisk named Galus Vez in 5 BBY. He operated a business there, selling spare parts for ships. On one occasion, a group of rebels hailing from Lothal journeyed to Osisis Station. Their goal was to acquire components for their freighter, called the Ghost. The Ghost had sustained damage following a raid targeting an Imperial supply yard. To secure the necessary parts, Hera Syndulla found herself racing the damaged Ghost against Vez's ship, the Splendour, through a treacherous course known as Fool's Run.
Vez attempted to sabotage Syndulla's chances by employing asteroid thrusters to inflict damage on the Ghost. Witnessing this, Kanan Jarrus and Ezra Bridger intervened, utilizing the Force to direct an asteroid toward the Splendour, thus leveling the playing field and enabling Syndulla to emerge victorious. Enraged by his defeat, Vez then tried to swindle the rebels out of their agreed-upon parts. Instead, he attempted to capture them, intending to deliver them to the Empire. However, the rebels swiftly seized control of the station and departed without the parts. Vez diligently erased all records of their presence, unaware that Sabine Wren had secretly painted the starbird symbol on the station's underside.
The initial appearance of Osisis Station was in "Ring Race," a 2015 comic story. Martin Fisher wrote the story, and Bob Molesworth provided the illustrations. The station's design took inspiration from the XQ1 Platforms featured in the Legends video games Star Wars: TIE Fighter, Star Wars: X-Wing vs. TIE Fighter, and Star Wars: X-Wing Alliance. Fisher specifically requested this in the script, as X-Wing Alliance is his preferred Star Wars game.