Bower is no stranger to the world of fantasy, having previously starred in the "Twilight" and "Harry Potter" franchises and a since-canceled "Game of Thrones" prequel.

Marsan's career spans over 120 movies, including Deadpool 2, Mission Impossible 3, Atomic Blonde, Back to Black, and Sherlock Holmes. The actor also played Terry Donovan, the brother to the titular hitman, across eight seasons of the hit drama Ray Donovan.

Jamie Campbell Bower, star of Netflix’s blockbuster supernatural drama Stranger Things, is joining one of biggest fantasy franchises of all

Jamie Campbell Bower, star of Netflix’s blockbuster supernatural drama Stranger Things, is joining one of biggest fantasy franchises of all time. Bowler has been tapped as a series regular for the upcoming third season of Prime Video’s Lord Of the Rings: The Rings of Power.

An American Saga -- Chapter 1," and Eddie Marsan, who starred in "The Winter King" series, are joining the "Lord of the Rings: The Rings of Power" cast for Season 3

The Rings of Power is currently gearing up to start filming its third season this spring. When it does, it will add two new cast members to Middle-earth: Jamie Campbell Bower and Eddie Marsan. We don't know anything concrete about which characters they will be portraying,