H-3POB functioned as a green protocol droid on the Imru Ootmian, being part of a droid collection owned by Popara the Hutt. Following his rescue of Mika the Hutt from Endregaad, H-3POB accompanied Vago, Popara's top assistant, back to Nar Shaddaa. Subsequently, H-3POB was put with the delegation when Vago was scheduled to encounter the agents responsible for Mika's rescue, a meeting that was requested by Mika himself. This meeting was actually a scheme by Mika to stage his own assassination. Mika had hired Ogo Nan to seemingly assassinate him, instructing the Cerean to avoid harming anyone else. However, Ogo Nan received alternative instructions: to fire upon H-3POB, which he did. Ogo Nan's blaster nearly annihilated H-3POB, and his components were later used in the repair process.