B2 grapple droid/Legends

"Alright, now I'm worried."

- Obi-Wan Kenobi

The grapple droid, based on the B2 super battle droid model, was a droid model specifically designed for the Separatists' attack on Coruscant.

Overview
Bigger and profoundly more vicious than its predecessors, the grapple droid was equipped with electrically charged industrial pincers, which it used to crush or impale its enemies. The grapple droid excelled at close-quarters combat and its embrace was quite deadly. They proved dangerously efficient against Jedi, who, if grappled, were unable to use a lightsaber.

General Grievous himself personally oversaw its modifications.

History
Grapple droids were used aboard Invisible Hand where they attempted to stop Anakin Skywalker's and Obi-Wan Kenobi's rescue of Palpatine, and in addition to being used during the attack on Coruscant, took part in the Battle of Utapau. At times they served as military police for the droid army. The battle of Utapau saw the introduction of even more formidable grapple droid, one that had a red color scheme and was capable of sending powerful energy blasts across the ground towards a target.

Following the deaths of the members of the Separatist Council by Darth Sidious's new apprentice, Darth Vader, these units were de-activated along with the other battle droids.

Appearances

 * Star Wars Episode III: Revenge of the Sith game
 * Star Wars Episode III: Revenge of the Sith game