Primal Reversion artwork

Primal Groudon vs. Primal Kyogre.

Primal Reversion (ゲンシカイキ Primal Reversion) is a concept introduced in Pokémon Mystery Dungeon: Explorers of Time & Explorers of Darkness and reintroduced to the core games in Pokémon Omega Ruby and Alpha Sapphire. This is similar to Mega Evolution, except that the Pokémon goes back into its ancient and original form, where it regains its true, ultimate power it formerly had. The only known Pokémon that are able to do this are Groudon and Kyogre. The Primal Reversion is represented with the symbol omega for Groudon (Primal Reversion symbol Groudon) and the symbol alpha for Kyogre (Primal Reversion symbol Kyogre). The key to the Primal Reversion are the Red and Blue Orbs, both held by their representive counterparts.


Primal Reversion Groudon

Groudon in the process of Primal Reversion.

Primal Reversion Kyogre

Kyogre in the process of Primal Reversion.

In the Hoenn region, it is believed that two big Legendary Pokémon existed: Groudon, who formed the land; and Kyogre, who formed the seas. They are talked about in a legend:

Long, long ago, there appeared in Hoenn two Pokémon of fearsome power. These two became known, in later times, as Groudon and Kyogre. When Groudon howled, the earth swelled and the land grew wide. The sun blazed overhead, and all the world around the creature was enveloped in incandescent heat. When Kyogre roared, water poured forth and the seas spread outward. Dark clouds enshrouded the world, and the deluge fell upon all...

It was a primal age, early in the world’s history. The natural world was overflowing with energy. That energy granted Groudon and Kyogre an overwhelming power. Seeking ever more of that energy for themselves, the two clashed again and again, and their battles cast the people and Pokémon of Hoenn into great danger. Brimming with the overwhelming power granted to them by nature’s energy, their transformation was named "Primal Reversion" by later people. And the people called their tormentors Primal Groudon and Primal Kyogre...

Also, in some places, cave paintings of these two Pokémon can be found, and these retell the stories told in legends:

Also, the legends continue with this one, that talks about Mega Rayquaza, who has some kind of relation with Primal Reversion:

One Pokémon looked down upon this battle from the sky above. The Pokémon that dances in the heavens: Rayquaza. Rayquaza is venerated by the people of Hoenn as their protector and savior. When Primal Groudon and Primal Kyogre had battled for 20 dawns and 20 nights, the world began to lose its natural balance and tilt toward destruction. The people, unable to endure any more, cried out to their mighty savior Rayquaza before a great stone that shone with rainbow brilliance. And a change came upon Rayquaza, weaving in the sky above Primal Groudon and Primal Kyogre. Suffused in brilliant light, its body began to transform visibly. And then...

Known Primal Reversions

Pokémon Primal Reversion Characteristics that change after Primal Reversion
Type Water
Primal Kyogre
Type Water
Ability: Primordial Sea
PS: +0 Speed: +0
Attack: +50 Defense: +0
Sp. Attack: +30 Sp. Defense: +20
Type Ground
Primal Groudon
Type GroundType Fire
Ability: Desolate Land
PS: +0 Speed: +0
Attack: +30 Defense: +20
Sp. Attack: +50 Sp. Defense: +0



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