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.

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

Jamie Campbell Bower and Eddie Marsan have joined the Season 3 cast of 'The Lord of the Rings: The Rings of Power,' from Amazon Prime Video.

Jamie Campbell Bower, star of Stranger Things, is joining the cast of the upcoming third season of Lord of the Rings: The Rings of Power TV series.

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

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,