3B3-888 was an OOM-Battle Droid used by the Trade Federation during the Invasion of Naboo. He participated in the Grassland Battle and served under Battle Droid Commander, OOM-9, during the battle. He helped capture many gungan warriors after the battle ended and even activated multiple PK Droids to either fix or destroy and broken battle droid units. 3B3-888 would later be tasked with killing gungan captain Tarpals before he was deactivated when the Droid Control Ship was destroyed.