Ryan Reynolds to reportedly star as Pikachu in Detective Pikachu movie - Polygon

I Review You, Pikachu!”

Detective Pikachu: Story of the Movie

Detective Pikachu Director Shares 1 Regret from Pokémon Movie (Exclusive)

Making Pokémon Movie Magic

Detective Pikachu Returns Has A Great Joke About The 2019 Movie

2nd Detective Pikachu Movie still in the works

Watch Pokémon Detective Pikachu

In Pokémon:Detective Pikachu(2019), it was mention that Mewtwo was last seen the Kanto region 20 years ago, which was also when the movie Mewtwo Strikes Back(1999) was released in the Internationally.

Detective Pikachu: Every Pokemon Appearing in the New Movie - IGN

Pokémon Detective Pikachu Graphic Novel