Scooby-Doo! and the Pokémon Mystery/Transcript

Jaykoko appeared
Jaykoko: The curse of Jaykoko is upon you! End this tourament or suffer!

Ash Ketchum:

Hooded Figure guides Professor Oak, Ash, Shaggy and Scooby
Professor Oak: Who are you?

Hooded Figure: A Friend. I can offer you some guidence to Serena, Professor Oak if i mean if, you do something to me.

Professor Oak:  What do you need?

Hooded Figure: The Key to the Twin's Cell. Give it to "him" when he arrives from Rome.

Professor Oak: Fine. You got yourself a deal. Lead the way.

(The hooded figure guides Professor Oak, Ash, Shaggy and Scooby to a room where they sees Serena gaged up in a bathroom.)

Unmasked Jaykoko
Fred Jones: Time to see who this really is.

(He unmasked Jaykoko, revealing to be Miette)

Everyone: Miette?!

Ending
Scooby-Doo: SCOOBY DOOBY DOO!!!!

Pikachu: Pika pikachu!