Arceus is a Mythical Pokémon and the central figure of the Pokémon universe's creation mythology. Introduced in Pokémon Diamond and Pearl, Arceus is known as the "Original One" and is said to have shaped the universe, creating Dialga, Palkia, and Giratina to govern time, space, and antimatter, respectively. It also brought forth Uxie, Mesprit, and Azelf to bestow knowledge, emotion, and willpower upon the world.

Arceus is a Normal-type Pokémon but can change its type using Plates or Z-Crystals,