The walker had an open cockpit where the driver and operator—or gunner—were seated. The gunner was positioned towards the rear of the walker, behind a protective plate.
Designed as a load-lifting exoskeleton, maintenance Uggernaughts featured plasma torches and for lifting extremely heavy materials. Armed walkers were fitted with a cannon and a projectile launcher to the walker's right and left respectively. The Uggernaught could move quite fast, and its cannons were also capable of rapid fire.
Uggernaughts were employed throughout Bespin on construction platforms. Imperial-loyal Ugnaughts employed several Uggernaughts in a confrontation with former Sith apprentice Galen Marek and Jedi Master Rahm Kota during the Great Jedi Purge.