Class four droid/Legends

A class four droid or fourth-degree droid was a droid programmed for military and security purposes. Such droids tended to perform tasks wherein violence or combat might be expected. Class four droids were grouped into four major categories: security droids, which were used to guard locations; gladiator droids, which were designed to battle other droids for sport; battle droids, which were the most common variety and used in standard combat; and assassin droids, the only variety expressly designed to kill organics.
==Appearances==
*Star Wars: Knights of the Old Republic
*Star Wars: Knights of the Old Republic II: The Sith Lords
*Star Wars: The Old Republic
*Star Wars: The Old Republic: Rise of the Hutt Cartel
*Star Wars: The Old Republic: Galactic Starfighter
*Star Wars: The Old Republic: Galactic Strongholds
*Star Wars: The Old Republic: Shadow of Revan
*Star Wars: The Old Republic: Knights of the Fallen Empire
*Star Wars: The Old Republic: Knights of the Eternal Throne
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*Star Wars: The Clone Wars film
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==Sources==
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