Dialga is a dual-type Steel/Dragon legendary Pokémon. It is not known to evolve into or from any other Pokémon. Dialga is the version mascot of Pokémon Diamond, appearing on the boxart.
Along with Palkia and Giratina, it is a member of the Creation trio of Sinnoh, representing time.
Dialga is a genderless species. Dialga is a sauropod-like Pokémon. It is mainly dark blue with some gray metallic portions, such as its chestplate, which has a diamond in the center. It also has various light blue stripes. It has a somewhat wing-like structure on its back and a crest on its head, resembling a type of dinosaur. Dialga also has two horns on top of its head, two fang-like horns around its mouth, three spines on the back of its neck, long claws, and a short tail. The wing-like structure on its back can be used to focus the flow of time, as seen in Pokémon Mystery Dungeon: Explorers of Time/Darkness/Sky
Being that Dialga primarily resides in a different dimension, its behavior is nearly impossible to study. It has been shown that it is very protective of its home. It has also been shown that it has violent conflicts with Palkia, who can be considered as Dialga's rival or enemy.
Dialga lives in another dimension, and can only be summoned to the main Pokémon universe by using the Red Chain. This dimension, as shown in the twelfth movie, is blue and full of floating diamonds and also the pathway through different time.
In the games, Dialga is located in the Spear Pillar at Mt. Coronet. In Explorers of Time, Darkness, and Sky, Dialga may be found at the top of Temporal Tower, Temporal Pinnacle.
Dialga has the ability to warp time by either speeding it up, slowing it down, or stopping it altogether. Similar to most other Dragon-types, Dialga is capable of wielding various elemental attacks. Dialga can also utilize several Ground-, Rock- and Steel-type moves. It is one of the few Pokémon that can use Aura Sphere. Dialga's powers can be amplified by the Adamant Orb. Dialga is the only known Pokémon that naturally learns Roar of Time.
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