The Dark Nest's nest ship, during the Battle of the Murgo Choke in 36 ABY, was designated "Bug One" by Alliance Admiral Nek Bwua'tu.
The Killik Colony, under the sway of the Dark Nest, constructed the vessel at Tusken's Eye. Luke Skywalker, along with Han Solo, C-3PO, R2-D2, Jae Juun, and Tarfang infiltrated the ship right before it jumped from the Eye intending to engage the Alliance blockade at the Murgo Choke.
While Skywalker and his companions struggled to disable the ship's hyperdrive independently, Leia Organa Solo used the Force to discern the ship's ownership, informing Bwua'tu aboard the Admiral Ackbar. Subsequently, Alliance forces commenced a heavy assault on Bug One until Leia realized her brother and husband were on board.
With assistance from Mara Jade Skywalker piloting her StealthX, Skywalker fought Lomi Plo and eliminated numerous Killik warriors. Mara's Jedi shadow bomb damaged Bug One's hyperdrive, forcing it to remain within the Utegetu Nebula.