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Primal Dialga (Japanese: やみのディアルガ Darkness Dialga) is a Pokémon that appears in Pokémon Mystery Dungeon 2. It is located at the pinnacle of Temporal Tower, and is the final boss of the game's main story line. Primal Dialga is actually a Dialga that lost control over its ability to control time due to the collapse of the Temporal Tower and changed to this form. In this form, it is also incapable of logical reasoning or showing mercy, only seeking self-preservation and preventing time from flowing properly. The player must return the Time Gears to the tower to restore the flow of time, calm down Dialga, and prevent the future where darkness rules.
Primal Dialga has the body shape of a normal Dialga but the color scheme is different. The blue color in its body is changed to dark navy blue, the streamers are recolored to orange and the diamond in the chest is altered from blue to a cherry shade red which is a sign of its berserk and savage state. This is caused by a collapsing Temporal Tower, resulting in complete loss of self-control, which earns it the name of "Primal Dialga".
The Primal Dialga state was from Darkrai's doing who stole the Time Gears, consequently outraging Dialga and disrupting the proper flow of time. In an alternate future, Temporal Tower collapses, sending Dialga into a primal rage, making him a being running on pure primal instinct and self-preservation, thus meaning he'd try to foil any attempt to alter the past. When Grovyle and the player go back in time, Dialga sends his follower Dusknoir back in time as well to stop them. He is not seen up until Dusknoir drags the player and their partner back to the future, were Primal Dialga orders Dusknoir to kill them. He then assists his followers in trying to stop the group from going back in time once more but fails. Once the player and partner reach the summit of Temporal Tower, Dialga attacks them, believing they've come to destroy the Tower. They manage to defeat him and save the tower, restoring time and Dialga to their normal states after which he thanks the player and their partner, grateful for all they've done. The future Primal Dialga, Grovyle, Dusknoir, and the player are all erased from existence due to being from a future which no longer exists but after the Temporal Tower incident, the present day Dialga returns the player to life as a show of gratitude for repairing the flow of time and the player's sacrifice.
Although Primal Dialga has lost control of its power, it can still warp through time and use its signature move Roar of Time.
The Dialga battled is not actually the same as the one from the future Grovyle comes from, when battled, Dialga still has a shred of its self left, and thus was not completely "primal". This is shown by the future Primal Dialga not being able to speak at all(even though Dusknoir apparently understood what it's roar meant) and the one the player and their partner battle speaking broken words.
In other languages
For more information on this Pokémon's species, see Dialga.
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