Warleader G'Sten was the leader of the Narn Regime assault on Gorash VII in 2259. He was also an uncle of Ambassador G'Kar, with whom he seemed to share a close relationship, referring to G'Kar as his "favorite nephew."
Narn intelligence had shown that the base was lightly guarded, and G'Sten concluded that it would be the perfect target for a decisive military strike against the Centauri Republic. However, a Centauri nobleman had already made sure that a fleet of Shadow vessels were guarding Gorash while Centauri forces headed to the Narn homeworld. During the assault, G'Sten was killed by the Shadows along with the entire Narn fleet that he was leading.