Ash Ketchum and Pikachu retire?! Pokémon's persistent protagonists
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Ash Ketchum and Pikachu to leave 'Pokémon' after 25 years
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Ash Ketchum, List of Deaths Wiki
Chris' Blog: The Hero's Journey - Ash Ketchum
Rappler - END OF AN ERA! Ash Ketchum and Pikachu are set