The Ghost War was a War when Betrayus led a massive revolt against Pac-World in a plot to take over the world and somehow managed to recruit ghosts from the Netherworld to aid him and acquire powerful weapons and vehicles for his invasion. During this revolt, he laid waste to many locations with his army of soldiers and ghosts, striking fear into many and even putting the rebel Resistance on edge. However, despite the fact that he had ghosts serving him and the fact that he was well-armed, he was eventually defeated. As punishment for his crimes, he was stripped of his corporeal form and banished to the Netherworld. Since then, he has been waiting and plotting for the day when he can gain revenge on all Pac-People.