General Ozmel, supreme military commander of the Ganymede-originating Doron Empire, initiated its universal conquest by overthrowing and deposing Queen Medusa, Ganymede's original ruler. He directed and personally led the Doron Empire's invasion of Earth. Under his command, Doron forces achieved rapid military success, subjugating approximately 95% of Earth within days and overwhelming all planetary defenses. His strategy included deploying energy-detecting satellites capable of launching devastating orbital bombardments targeting significant energy signatures from human resistance. This satellite network enforced a critical tactical constraint during ground engagements: any sustained energy emission triggered an annihilating counterstrike within approximately three minutes. Ozmel consistently deployed mechanized Battle Mecha Beasts against Earth's primary defensive weapon, the Mechander Robo. As the pinnacle of the Doron Empire's military hierarchy on Earth, he directly oversaw all combat operations against human resistance forces.