Arceus (Japanese: アルセウス Arceus) is a Normal-type legendary Pokémon. However, its type will change when it is holding one of sixteen items known as plates and can in reality be any type.
Like Darkrai and Shaymin before it, Arceus was not officially recognized by Nintendo until February 2009, the year of its debut movie. It was later revealed by the official site on August 3rd, 2009.
Arceus is also known as "The Original One," as it is said that it created Sinnoh, and possibly the entire Pokémon universe, along with the lake guardians and creation trio. Arceus can only be found in the wild legitimately with the Azure Flute, which has not yet been distributed officially and can currently only be obtained by cheating. However, Arceus itself was distributed via multiple Nintendo events in 2009 and 2010.
Arceus is the final Pokémon in the National Pokédex within Generation IV.
Arceus is an equine being similar to a Qilin or Centaur. Its body color is white with a gray, vertically-striated underside, the pattern of which has similar recurrences on the underside of Arceus's mane, tail, and face, and Arceus's four pointed feet are tipped with gold hooves. Its mane is quite long, jutting away from its head, and its face is gray, with green eyes and red pupils, and a green circular pattern below its eyes. Arceus also has a streak of gold coloration on its head, and ears that point upward. Its neck is fairly long, with two pairs of extrusions to the sides, and a flap-like feature on the neck's underside that is colored white like much of the body. It also has a golden cross-like wheel attached to its body by its round abdomen, which changes color along with its eyes and hooves based on Arceus's current type. The wheel also has four jewels attached to it. The pattern of striated gray of Arceus's underbelly resumes past Arceus's waist, the underside of Arceus's limbs also being gray in coloration, and with extrusions at the tops of the legs. Arceus's tail is fairly like its mane in shape and coloration.
According to legend, Arceus is thought to have created the Sinnoh region and possibly the entire Pokémon world, the lake guardians: Uxie, Azelf, Mesprit, and the creation trio: Dialga, Palkia, and Giratina. Because of this, Arceus is thought to be one of the most long-lived of all Pokémon species. It has the power to recreate the creation trio as well, presumably to guard the dimensions when a Trainer has caught one of them.Arceus is multifarious; it can change forms and types with the use of the special plates.
Arceus is the only known Pokémon who can learn Judgment. Arceus can also use many attacks of various types, but to a lesser extent than Smeargle or Mew. Arceus is also the only non-Dragon-type Pokémon other than Smeargle who can learn Draco Meteor, although it must become a Dragon-type (by holding a Draco Plate) in order to learn it.
According to the anime, its power can also bring back things that it once destroyed or make certain things vanish into thin air. Arceus also has the ability to halt time.
While normally a kind, heroic and benevolent Pokémon, Arceus does not suffer fools gladly, and will attack in a violent rampage if betrayed or deceived. It also holds long grudges if angered.