When his father goes missing, Smith's character teams up with the Pokémon investigator to find him.
Justice Smith (Jurassic World: Fallen Kingdom) and Kathryn Newton (Big Little Lies) are also a part of the film's main cast. It's reported the role is motion-capture using Reynolds as the character. There are even some weird mashups that have been floating around for years that are especially prescient.
Reynolds will play the titular Detective Pikachu. Filming is set to begin in London in January. Newton's character, a "sassy journalist", tags along.
Legendary's live-action Pokémon movie, Detective Pikachu, has been charging full-steam ahead in the past month.
Who could Premier League teams draw in the Champions League?
Juventus grabbed the group's second place with a 2-0 away victory over Olympiakos. Also, no side can be drawn against a team they played in the group phase.
Many details of the project are being kept off the grid, including the casting, which has been underway under the radar by the usually secretive Legendary. The script comes from Nicole Perlman (Guardians of the Galaxy) and Alex Hirsch (Gravity Falls).
The new film will be based on the already-successful franchise, introduced with video games in Japan in 1996. The film is being distributed by Universal, but a North American release date has not yet been announced.
Before Reynolds shows up in Detective Pikachu's fedora, he will first return in to cinemas in Deadpool 2, which opens June 1, 2018.