List of Nintendo event Pokémon with in-game effects

This is a reverse-chronological list of distributed event Pokémon that may have in-game effects when transferred to a Pokémon game.

Volcanion
In Pokémon X and Y, if the player has a in their party, Lumiose Press editor-in-chief will appear in the Lumiose Press building, having finished her research. If talked to, she will tell the player the top-secret information on the Volcanion she gathered.

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Hoopa
In Pokémon X and Y, if the player has a event in the party, a  in Parfum Palace will appear and share his research about supernatural events that connected to Hoopa.

In Pokémon Omega Ruby and Alpha Sapphire, if the player brings a event Hoopa in a Poké Mart, a new clerk will show up near the counter at the far left side. If the player talks with this clerk, the clerk tells the player a story and give the player the Prison Bottle.

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Steven's Beldum
If the player has Steven's, Steven Stone makes a nod to Mega Evolution Special II during the Delta Episode in , mentioning an occasion, a long time ago, when he had the chance to meet and battle  alongside a young Trainer who used a black Charizard.

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Diancie
In, upon leaving a Pokémon Center with in the party, the master and its apprentices who desire to obtain a Diancie will appear outside the Pokémon Center. In, the Diancie event remains the same. However, the master will also give the player a Diancite.

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Genesect
In, upon entering the P2 Laboratory with in the party, a  named Dudley will appear and become surprised that the undefined has the Pokémon of the canceled project that he was working on. He will request a battle with the player, then hand over two Drives (depending on game version) after being defeated.

In, the Genesect event remains the same. However, a now lingers outside the building, and following the downfall of Team Plasma, Colress parks the Plasma Frigate at the island for the rest of the game.

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Meloetta
In the Generation V core series games, if the player brings a to the Café Sonata in Castelia City, a  will teach it a move, which allows Meloetta to switch in between Aria Forme and Pirouette Forme.

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Keldeo
In, if the event and its comrades (, , and ) are brought back to the Moor of Icirrus, these three Swords of Justice will teach Keldeo the move.

In, if the player examines the rock in the Pledge Grove with an Ordinary Form Keldeo in their party, Keldeo will want to come out of its Poké Ball and will learn by the determination of Cobalion, Virizion, and Terrakion. After the event, Keldeo resolves to battle and transforms into its Resolute Form.

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Liste des Pokémon évènementiels ayant des effets dans les jeux