OO-7JB was a droid that lived in the droid community in X2-4 on the moon Uffel during the waning years of the Galactic Republic. During the time of the Clone Wars, a rift arose between the droids in the community and OO-7JB became allied with a non-violent loyalist droid faction. The Heroes of Cularin traveled to Uffel to investigate the problems there and HG-211, the droid community's security chief, sent OO-7JB to escort the heroes to him.