Crawler One was a type of icecrawler employed on the world of Syned throughout the era of the Republic Dark Age. It provided transportation for the Arkadianate city of Calimondretta, which served as its capital. The Sith Lord known as Arkadia Calimondra utilized such an icecrawler to move Jarrow Rusher to the troopship called the Diligence, as she planned to take the student refugees onto the ship as subjects of the Arkadianate. A male Nazzar icecrawler driver was at the controls. Nevertheless, Rusher commandeered the vehicle, making use of it as a "trojan horse" during the Siege of Calimondretta. In the course of the siege, "Crawler One" was equipped with a pair of artillery cannons, one of which was named "Bitsy."