The Hoplite functioned as the Gladiator-class Star Destroyer's flagship for a minor Imperial Navy battle group stationed at Ilum. Captain Malthegn commanded the Hoplite, which was accompanied by smaller frigates and gunboats. Being a Gladiator-class vessel, the Hoplite measured 600 meters long.
The Hoplite initially appeared in the Nexus of Power sourcebook for Star Wars: The Roleplaying Game, which was a component of the Star Wars: Force and Destiny series, published in 2016.