Few Pokémon are as iconic in Gen IV of Pokémon as Dialga and Palkia. These are the legendary and box Pokémon for Pokémon Diamond, Pearl, and their remakes. Dialga and Palkia remain important in Pokémon Legends: Arceus as they gain a new form that players can change.

To change Dialga’s form in Pokémon Legends: Arceus, you will to firstcomplete the main game.After completing it, you will receiveRequest Number 89, The Diamond Clan’s Treasure.Speak with Adaman, the leader of the Diamond Clan who can be foundin the Obsidian Wastelands. He will challenge you to a battle.

Image via The Pokémon Company

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Once you defeat Adaman, he will give you the Adamant Crystal. Use this item on Dialga and it will change forms.you’re able to remove the item to change its form back, allowing you to change them freely. It should be noted that the new form is called the Origin Form, while the one players are used to is the Altered Form.

This is a neat quest to take on after having completed the game and a good way to keep Dialga relevant to the scene. If you want to get Dialga’s Origin Form, prepare for a fierce battle against Adaman!

For more information on Pokémon, check outBest Nature for Pichu, Pikachu, and Raichu in Pokémon Legends: ArceusandThe best early-game Pokémon in Pokémon Legends: Arceuson Pro Game Guides.