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.

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

Mewtwo, Ultimate Pop Culture Wiki

Detective Pikachu Makes Sneaky Reference To First Pokemon Movie

Netflix's Pokemon movie: what to know about Mewtwo Strikes Back – Evolution

Why Mr. Mime Was Almost Cut From Pokemon: Detective Pikachu - IGN First - IGN

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

Detective Pikachu' - Review Thread : r/movies

Our Theory on Mewtwo's Explosive Role in Pokemon: Detective Pikachu - IGN

Pokémon Journeys: The Series (TV Series 2019– ) - News - IMDb

Pokémon: The First Movie - Mewtwo Strikes Back (1998) - IMDb

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