Rodor’s planet was destroyed by Galactus and he joined the Intergalactic Coalition of Survivors, a group of survivors from Galactus’ hunger. They chased the Silver Surfer across the universe.
When they found the Surfer, they used their entire power supply in an attempt to kill him. This left them stranded in system and the Surfer unharmed by their attack.
Under Tinac’s command, they subjugated the population and threatened it’s destruction. They took a member of the race and supplied him with weaponry to defeat the Surfer for them. When the Surfer returned to the planet, Rodor had finally had enough of Tinac’s madness and obsession and knocked him out. Rodor then took command of the Coalition.