Ozmel commands the Doron Empire forces from the Ganymede system as the primary antagonist. He launched the empire's expansion by overthrowing Queen Medusa of Ganymede within the Magellan star cluster, seizing leadership of the invading forces. Following Ganymede's conquest, Ozmel directed the Doron Empire's invasion of Earth. His forces overwhelmed the planet's defenses, achieving 95% occupation within days. He deployed energy-detecting satellites capable of launching devastating Omega Missiles, designed to annihilate significant energy signatures on Earth's surface and cripple resistance.

As supreme commander, Ozmel oversaw all military operations against Earth's remaining defenders. He personally directed the deployment of mechanized Battle Mecha Beasts, engaging Earth's last line of defense, the Mechander Robo. Ozmel's leadership persisted until the conflict's final stages, culminating in his defeat during the Earth Force counterattack. His command represented the central authority and driving force behind the Doron Empire's campaign of universal conquest.