Cyrus is the founder and leader of Team Galactic. He sought to destroy this universe to create a perfect one in its place, but after his failure and time spent in the Distortion World, he changed his mind and instead decided to support Diamond instead.
Cyrus encounters Diamond in the Distortion World and Cyrus tells Diamond that in order to stop Giratina, they must release Dialga and Palkia from where Giratina is keeping them. Cyrus explains that his failure in the DP Arc was that his heart had been weak and he had refused to accept what didn't fit in his idea of the world. After seeing Diamond, Pearl, and Platinum work together to stop him, Cyrus realized that their hearts completed each others', and he wishes he had had friends like that. Diamond smacks him on the head, telling him he's completely wrong, and then cheerfully tells Cyrus it's nice to have someone else play the "straight man," since usually Diamond plays the straight man in his comedy with Pearl. The two then send out their Pokémon and attack, successfully freeing Dialga and Palkia.
- Night Slash