Name: Variant Techno Union LM-432 crab droid
Type: Battle Droid
Scale: Speeder
Length: 1.49 Meters
Skill: Ground Vehicles 4D, Vehicle Blasters 5D
Crew: Integrated droid brain
Cargo Capacity: 0kg
Cost: 14,000 (used)
Cover: N/A
Maneuverability: 1D
Move: 10, 30 kmh
Body Strength: 3D
Weapons:
         Light Laser Cannon
                 Fire Arc: Front
                 Scale: Speeder
                 Skill: Vehicle Blasters
                 Fire Control: 2D
                 Range: 50-300/500/1km
                 Damage: 5D
         Twin Blasters
                 Fire Arc: Front
                 Scale: Speeder
                 Skill: Vehicle Blasters
                 Fire Control: 1D
                 Range: 5-50/100/300m
                 Damage: 5D
         Bubble Wort Projector
                 Fire Arc: Front
                 Scale: Character
                 Skill: Vehicle Blasters
                 Fire Control: 2D
                 Range: 0-5/10/30m
                 Strength: 7D *

*: Mounted on a variant of the LM-432 crab droid, the bubble wort projector was a Gungan device used by the Confederacy of Independent Systems in battle against Republic forces in the Clone Wars. It projected an orange energy bubble around enemy combatants, thereby immobilizing them. A skilled user of the Force could pop them from the outside, as demonstrated by Anakin Skywalker. If it hits, it restrains the target with its strength, sealing the target inside and making them immobile and helpless.

Description: The LM-432 crab droid, also simply referred to as a crab droid, was a battle droid used by the Confederacy of Independent Systems during the Clone Wars. Its name was derived from its six-legged scuttling movement and organic appearance. These droids were also nicknamed "muckrackers" because of their extensive use in marshy terrain.

Ranging from three to twenty feet tall, the crab droid could use its legs to attack infantry in its way. As well as their powerful pincer legs, LM-432 crab droids were armed with twin blasters located on the bottom of the droid's body. These blasters were capable of rapid fire and a powerful double blast. They were also equipped with a vacuum pump system integrated into their forward pincers, which could suck up and then spit out mud to either clear space for Separatist forces or obscure the visual sensors of enemy forces. This earned them the nickname of "muckracker". Crab droids also used their front two pincers to whack opponents out of the way or to crush them with their ends. The crab droid was also equipped with three glowing photoreceptor eyes and communication/sensor antennae-making it seem like it was a living creature rather than a machine-a feature many of the Separatists' droids included.

LM-432 units were protected by armorplast-shielding that could deflect blaster shots. The largest legs of an LM-432 unit were tipped with heavy duranium stabilizers that could secure perches on even bedrock. Smaller LM-432s were unable to rid themselves of opponents who got on top of them-veteran clones knew to avoid their blaster cannons by leaping on top of them. When in pursuit of an enemy, it could move very fast in short bursts to overtake it, and in this way run over their target.

Crab droids were first deployed in conflicts on marshy worlds, but their ability to cross difficult terrain and even scale jagged surfaces led to their usage elsewhere, such as at the Battle of Utapau.

Other variants of the LM-432 crab droid included tiny models for espionage and giant versions that served as mobile armor, which were capable of taking on Jedi. One rare variant was equipped with Gungan bubble wort projectors that could imprison their targets in force fields.
At least one crab droid was seen fighting on Rodia during the Mission to Rodia. Also, a large number of them were used in the Battle of Malastare, but nearly all were destroyed by the electro-proton bomb.
They were also heavily used as security in the Separatist prison, Citadel. Many were used because of the rough terrain, to capture the Jedi who attempted escape.
Following the execution of the Separatist Council by Darth Sidious's new apprentice, Darth Vader, these units were deactivated.
A number of them were used by the Zabrak bounty hunter Vril Vrakth during the Battle of Nizon in 19 BBY.
During the Battle of Tar Morden, many crab droids were stolen from a factory and would be utilized in the Academy of Carida for live fire training sessions, and would be among the inspirations for the Imperial MT-AT walker.
Decades later, crab droids left from the Clone Wars were still utilized by the Empire during the Galactic Civil War, being used as scouts and sentries.