The Timeless Mist has been with Yebus ever since he left Gand. He acquired it shortly after leaving the planet. At the time, the Razor-class Starfighter was one of the most advanced stafighters in the galaxy although it would soon be eclipsed by Incom’s famous X-wing.
However, Yebus has never been one to trade-up the minute something better comes along, not if what he already has works just as well. The Mist has been a reliable and versatile craft for Yebus, who actually prefers the Razor’s two ion cannons as opposed to the X-wing’s four laser cannons. With the upgrades the Gand has given it over the years, it can outperform most X-wing models in combat.
Since Alderaan’s destruction, Yebus has been careful to take good care of the Timeless Mist, aware that the Razor Fighter is now a rare vessel in the galaxy. One day he does eventually plan to replace the Mist with a new fighter of choice. When that day comes, Yebus will have the Mist put into storage, hopefully to one day be moved to a museum on Gand.