Although initially an enemy to Earth, he informs Earth Defense Force of the dire situation planet Iscandar was in when he returned to Garmilas to find the Black Nebula Force mining for resources to fuel their war machine. He later becomes an ally of the Yamato when Iscandar was plunged into deep space after Garmilas exploded, and the Black Nebula forces pursued the planet and threatened Starsha. Working together with the crew of Yamato, his bitterness lifted and he acclaimed his love for Starsha. Starsha however sacrifices herself and her planet to stop the giant Black Nebulan battle fortress sent to secure the planet's resources for war purposes. Because of her sacrifice, Desler had a renewed sensation of love and peace which he had never realized was inside his heart. He departs at the end of the battle on good terms with Earth and Yamato. A couple of years after the destruction of Garmilas, Desler wanders the Milky Way Galaxy, and finds his ancestral home planet Galmania which is occupied by the Bolar Federation. He quickly mounts a counter-attack to free his people, and in doing so proclaims himself as the new Emperor, set on ridding the galaxy of the cruel Bolars. However, because of his quick quest to secure the entire Milky Way Galaxy, his officers become war-mongers who would use planet-destroying hyperion missiles to eliminate any enemy or resistance. One such missile had gone astray and struck Earth's Sun causing accelerated nuclear fusion to the point that the Sun was to explode in less than a year. In response to Earth's dire situation, and unaware that Desler's empire is responsible for it, Yamato was sent to search for a new planet suitable for human habitation. The Yamato was attacked by Galman forces when they intervened in a conflict in a neighboring system, Berth. Because of the intervention, Galman officers and generals made it a top priority to destroy or capture the ship. Yamato was trapped inside the hangar of a mobile super fortress of the Galman Eastern Task Force fortress, and taken to be presented to Desler. Upon presentation, Desler flew into a rage at his generals' failure to obey his order to stay far from Earth's solar system, and apologized to the crew of Yamato. He then learned that his empire was the cause of Earth's plight. He offered to help Earth by dispatching a fleet of