While Taro was fighting Enmargo on Earth, Juda combined the spirits of Alien Baltan, Red King, Gomora, Alien Mefilas, Eleking, and Alien Hipporit into a monstrous robot known as Grand King. The robot took repeated assaults from Ultraman, Seven, Jack, Ace, and Zoffy without even slowing down. Firing back, Grand King brought down each of the Ultra Brothers. Soon the fight was taken to the surface of an alien world where there is no life to minimize damage. The Ultras tried their best, but Grand King was too powerful and continued to shrug off their strongest attacks as if they were nothing. Just as it all looked grim for the five Ultras, Taro returned from his battle on Earth to assist his comrades in stopping the machine. However even after joining the fight, Taro and the brothers were still no match for Grand King's strength and armor. It was then that the revived Father of Ultra sent out an order so the five brothers fused with Taro so that he would have enough power to bring down the juggernaut. Once they did this, Taro managed to topple the goliath. Grand King refused to go down without a fight, resulting in Taro using his new Cosmo Miracle Ray.