Pokémon: The First Movie is the reason Mewtwo is in Detective Pikachu - Polygon

Pokémon: The First Movie: Mewtwo Strikes Back arrived in 1998. More than 20 years later, the story of Ash, Pikachu, Mew, and Mewtwo has new resonance as the Pokémon come to live in live-action while keeping Pokémon game and anime canon alive.

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Pokemon's first live-action movie 'Detective Pikachu' latest trailer released, Pikachu's intense arrest burst - GIGAZINE

Detective Pikachu Writer Reveals Why Film Connects to Pokemon: The First Movie

Detective Pikachu Has Deep Ties To The First Pokemon Movie, Mewtwo Strikes Back - GameSpot

Why Remake Masterpiece That Is Pokémon: The First Movie w/CGI?

Pokémon Detective Pikachu Director on How Mewtwo Connects to Kanto - IGN

Netflix's Pokémon remake Mewtwo Strikes Back - Evolution hits hard - Polygon

Mewtwo (Detective Pikachu) - Bulbapedia, the community-driven Pokémon encyclopedia

Netflix to release CG remake of Pokémon: The First movie in February - Polygon

Detective Pikachu' Mewtwo Twist Explained: How the Games Tie In – The Hollywood Reporter

Mewtwo destroys the Lab Pokémon: Detective Pikachu Opening Scene

Pokemon's first live-action movie 'Detective Pikachu' latest trailer released, Pikachu's intense arrest burst - GIGAZINE

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