OWO-1 was an OOM command battle droid sent by Trade Federation Viceroy Nute Gunray to make certain that Qui-Gon Jinn and his apprentice, Obi-Wan Kenobi, had been killed by a dose of deadly dioxis gas which had previously been inserted inside the room in which the two Jedi were waiting. Leading his squad of security droids into the gas-filled room, OWO-1 discovered that the gas had not functioned as intended, and before he could react he and the rest of his squad were destroyed by the Jedi.