A type of droid in Star Wars designed to kill important people. Despite being among the most badass droids featured in the franchise, they weren't done justice until the release of The Mandalorian.
Clone Trooper: We can kick battle droid butt!

Clone Commander: But that's an Assassin Droid...

Clone Trooper: Shit...
by Exterminator (not really) December 2, 2019