Jax Pavan 40,000 was one of the 582,797,754 Human males named Jax Pavan on Coruscant. He was a widely-acclaimed game designer who invented the Warchisel franchise of holo-tabletop wargaming. The scenarios depicted ancient battles, based on the fall of the Infinite Empire, through to the Mandalorian Wars. This series turned out to be a huge success, and made Jax a wealthy man-about-town.
Sensing the general sea change in the galaxy after the liberation of Coruscant, Pavan came up with a new version of Warchisel, calling it Warchisel 40,000. This edition was more oriented toward "modern" and "future" combat, replacing the fantasy struggles with that of the Galactic Civil War and introducing such elements as starfighter and capital ship combat, as well as planetary destruction. This new game proved even more popular, though some in the remnants of the Galactic Empire decried him as a propagandist for the New Republic.
Pavan eventually retired from public life about five years after the Yuuzhan Vong invasion.