Vorta administrator during the Dominion War. Gelnon was in charge of a squadron of newly-bred "Alpha" Jem'Hadar soldiers that captured the U.S.S. Defiant on stardate 51474.2. Gelnon proceeded to plan a Dominion attack on the dilithium-rich Coridan planets, but was undone by Defiant crewmembers aboard a miniaturized runabout.