Slowking was with Charon, as he was at Eterna City to observe Giratina's movement. To let Giratina attack Diamond and Pearl, Charon's Slowking used Trump Card. Giratina got hurt, and immediately went to use Shadow Force. Charon approached Pearl, and the former's Slowking blew Pearl away. As the battle concluded, Charon and Slowking retreated to the hole, through which Giratina went through. There, Charon and Slowking encountered Saturn, Mars and Jupiter, to whom Charon ordered to fight the three trainers that were hunting him.
As Platinum wanted to stop Charon, Charon had Slowking use Psychic to attack her, but Platinum's Pokémon defended her. Slowking attempted to attack, but Platinum's Pachirisu used Captivate and Last Resort, followed with Cherubi's Solar Beam. Slowking was quickly defeated, and Charon became annoyed by these "regular Pokémon".
|Psychic||psychic||PT015: The Final Dimensional Duel I|
|Trump Card||normal||PT018: The Final Dimensional Duel IV|