Hunter-killer

There are various Hunter-killer droid models in the Star Wars franchise:

Canon

 * The Hunter-killer droid used by the Ikkrukkian government

Legends

 * The HKB-3 hunter-killer droid used by the Trade Federation
 * The HK-series assassin droid originating in the Old Republic era
 * The Hunter-Killer probot used by the Galactic Empire
 * The Hunter/killer droids used during the Stark Hyperspace War