The creation trio, sometimes called the deity trio or the dragon trio, is a term used to refer to three powerful legendary Pokémon of the Sinnoh region: Dialga, Palkia, and Giratina. According to Sinnoh myths, they were created by Arceus simultaneously when the universe began.
Each of the members of this trio, including its trio master Arceus, have control over their own dimensions. Dialga controls time and Palkia controls space, two aspects of the four-dimensional universe that the Pokémon world, like our own, is a part of. The final member, Giratina, has control over antimatter and the Distortion World, where time does not flow and space is unstable.