What is the title of the 2019 live-action Pokémon film starring Ryan Reynolds?

The 2019 live-action Pokémon film starring Ryan Reynolds is Pokémon Detective Pikachu.

The film is based on Detective Pikachu, a Nintendo 3DS game in which Pikachu can speak and helps solve mysteries. Ryan Reynolds provides the voice and performance for the title character, while Justice Smith plays Tim Goodman, a young man searching for his missing father.

Unlike the traditional anime films, Pokémon Detective Pikachu combines computer-generated Pokémon with live-action human actors and locations. It is set in Ryme City, a place where humans and Pokémon live together without the usual battling-focused structure.

The film is often confused with Pokémon: The First Movie because both are major Pokémon theatrical releases. They are separate productions: the 1999 animated film focuses on Mewtwo, while the 2019 movie adapts the Detective Pikachu game and centers on a mystery.