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Professor Oak's next-generation encyclopedia — entrusted to Gold, Silver, and Crystal, the device that designates them as Pokédex holders and records their journey.
The Johto Pokédex is Professor Oak's second generation of the device, given to Gold, Silver, and Crystal to catalogue the Pokémon of Johto. Receiving a Pokédex is what designates a trainer as a 'Pokédex holder' — a status that carries weight across the manga's generations. Crystal's specific mission is to complete the Pokédex by capturing every Pokémon in it, which she accomplishes by the arc's end.
A handheld electronic device with a red casing, a flip-open screen, and scanning capability. More advanced than the original Kanto model. Each Pokédex is keyed to its holder — Gold's, Silver's, and Crystal's each record data differently based on their special skills.
Also known as: Pokédex, Johto Pokédex, Pokémon Encyclopedia