Boardgamegeek https://boardgamegeek.com/boardgameexpansion/218254/star-wars-imperial-assault-bt-1-and-0-0-0-villain
English - First introduced in the Darth Vader comics, BT-1 and 0-0-0 serve the interests of the Galactic Empire with a special relish for destruction. 0-0-0 is a protocol droid specially equipped to interrogate and eliminate captives, while BT-1 possesses enough hidden firepower to destroy an entire squad of enemy soldiers.