He joins Jason Momoa, Amber Heard, Nicole Kidman, Willem Dafoe, Patrick Wilson, Ludi Lin, Dolph Lundgren, Temuera Morrison and Yahya Abdul-Mateen II in the film.
According to Warner Bros, Beach will play Jesse Kane, part of a group of high-seas hijackers who has a fateful interaction with Aquaman, reported Deadline.
James Wan is directing the movie, which will hit the US theatres during Christmas season next year.