"Look out Jar Jar, a crab droid is heading for you!"- C-3P0, trying to warn Jar Jar.
The LM-432 Crab Droid was an powerful Battle Droid unit that was a part of the Confederacy of Independent Systems Droid Army during the Clone Wars. Although it was very powerful, the Crab Droid had one weak spot, its eye, which was exposed to Clone Troopers during the early stages of the war. After the Clone Wars, the Galactic Empire took control over the entire Confederate Droid Army, but although more than half of the units were shut down, Crab Droids would still be used by the Empire as a way to destroy Separatist Holdouts, like the one Gizor Dellso put up on Mustafar.