Name: Kuat Drive Yards / Imperial Department of Military Research All Terrain Scout Transport (AT-ST)
Type: Medium walker
Scale: Walker
Length: 6.4 meters
Height/depth: 8.6 meters
Mass: 12,100 kilograms
Skill: Walker operation: AT-ST
Crew: 2, skeleton: 1/+15
Crew Skill: Missile weapons 4D, vehicle blasters 4D+2,
walker operation 5D
Cargo Capacity: 200 kilograms
Cover: Full
Cost: Not available for sale
Maneuverability: 1D
Move: 30; 90 kmh
Body Strength: 3D
Weapons:
        Taim & Bak MS-4 twin blaster cannon
                Fire Arc: Front
                Crew: 1 (pilot)
                Skill: Vehicle blasters
                Fire Control: 1D
                Range: 50-200/1/2 Km
                Damage: 4D
        Mk 1/W twin light blaster cannon
                Fire Arc: Front
                Crew: 1 (co-pilot)
                Skill: Vehicle blasters
                Fire Control: 1D
                Range: 50-300/500/1 Km
                Damage: 2D
        Dymek DW-3 concussion grenade launcher
                Fire Arc: Front
                Crew: 1 (co-pilot)
                Skill: Missile weapons: grenade launcher
                Fire Control: 1D
                Range: 10-50/100/200
                Damage: 3D

Description: The All Terrain Scout Transport (AT-ST), also known as the chicken walker for its two-legged design, was a bipedal walker used by the Galactic Republic during the late Clone Wars and, later and more extensively, by the Galactic Empire during the Galactic Civil War. It was a successor of the AT-XT.

Characteristics
Main design
Colloquially known as a "chicken walker" because of its shape and walking motion, the AT-ST was a light, heavily-armed, ground combat vehicle, and able to trek various environments. The stock model was equipped with a chin-mounted, double blaster cannon, a light E-Web twin blaster cannon on the port side, a concussion grenade launcher on the starboard side of its head, two clawed feet, and was encased with 9095-T8511 grade durasteel.

The AT-ST was designed to be a recon, hit-and-run vehicle. It was lighter than its bigger brother, the AT-AT, and could withstand standard blaster fire, but was vulnerable to heavy laser fire and missiles, as well as physical attacks to the legs and the side of the head. The latter weakness was witnessed during the Battle of Endor, when the Ewok tribal warriors destroyed an AT-ST by using logs to ram the sides of the walker's head. The AT-ST could also be infiltrated by species with great physical strength. At Endor, the Wookiee, Chewbacca, forced his way through the top hatch and took control of the walker in this manner.

The AT-ST's chin blasters had an effective range of two kilometers and were used for anti-vehicle attacks, while the armor-shielded blaster cannon and grenade launcher provided close-range protection against infantry and light emplacements. Like the AT-AT, the AT-ST utilized a holographic targeting system, allowing a 360-degree view of its position. The armor was not sufficient to withstand blasts from starship cannons, but was impervious to small-arms fire. In addition, according to Leia Organa Solo, the area behind the angled viewport visors was weak enough to be susceptible to missile fire, although Han Solo wondered with surprise how she knew that.

The 8.6-meter-tall walkers were piloted by a crew of two Imperial Army pilots and carried 200 kilograms of cargo, which had to be loaded and unloaded via the single hatch located atop the superstructure accessible using a series of handholds placed on the sides of the walker. However, for practicality, the preferred method of entry inside military bases was to use a loading platform.

The bipedal propulsion system was one of the primary weaknesses of the AT-ST. On even terrain, the walker could achieve over 90 kilometers per hour, but on uneven or shifting terrain, a walker could quickly become unbalanced enough to fall over. In rare cases, AT-STs are even capable of leaping when in combat with an enemy.

An advanced gyro system, located beneath the command module, provided the balance needed, but could be easily damaged. Following the Battle of Hoth, Rebel tacticians learned to ambush and immobilize AT-ST's; once trapped, a well-placed rifle shot could destroy the walker's gyro system.

Modular attachments
The AT-ST was a highly modular walker design, being able to switch weapons slots and additional tools to fulfill a variety of roles on the battlefield.

Known modifications included a top-mounted, shielded gun turret for soldiers standing on lookout, mortars bolted to the upper side of the turret, side-mounted six-slot rocket launchers instead of laser cannons, and grenade launcher mounts on the walker's lower cheeks.

Other modifications included communications antennae, using additional armor plates to cover the battery packs and having a winch system underneath the chin gun. During the construction of the Imperial base on Endor, several AT-STs had their chin guns replaced with metal clamps and were used to tear down trees and make clearings for future construction.