Ozz served as a soldier for the Sith forces throughout the Cold War era.
In the year 3643 BBY, Ozz, along with a group of fellow soldiers, received orders to go to Sebaddon, a location where the hex droids being manufactured posed a grave threat: the potential annihilation of the entire galaxy. While the attack on the planet unfolded, Ozz, though economical with his speech, demonstrated a strong commitment to obeying the commands of Larin Moxla. Larin tasked them with monitoring the atmospheric conditions to prevent an accidental landing within a volcano.