Gelnon's attack ship was a Jem'Hadar attack ship commanded by Gelnon in 2374. Its Jem'Hadar crew included Kudak'Etan, Ixtana'Rax, Lamat'Ukan and Duran'Adar.
In mid-2374, the warship was on its way to Coridan to attack the dilithium mines there, when it detected the USS Defiant, which was investigating a subspace compression anomaly. The warship attacked and severely damaged the Defiant and transported several Jem'Hadar soldiers to it.
Gelnon later left the Defiant under the command of Kudak'Etan to take it to a Dominion base, while the attack ship left to resume its mission to Coridan. (DS9: "One Little Ship")