James Wan Director, Producer Jason Momoa Arthur Actor Patrick Wilson Orm Actor Yahya Abdul-Mateen II Black Manta Actor Amber Heard Mera Actor Nicole Kidman Atlanna Actor Randall Park Dr. Shin Actor Temuera Morrison Tom Actor Dolph Lundgren King Nereus Actor Martin Short Kingfish Actor Jani Zhao Stingray Actor Pilou Asbæk Kordax Actor Indya Moore Karshon Actor John Rhys-Davies Brine King (Digi) Voice Vincent Regan Atlan Actor David Leslie Johnson-McGoldrick Screenwriter Peter Safran Producer Rob Cowan Producer Galen Vaisman Executive Producer Walter Hamada Executive Producer Pete Chiappetta Executive Producer, Executive Producer, Executive Producer Don Burgess Cinematographer Kirk M. Morri Film Editing Rupert Gregson-Williams Original Music Bill Brzeski Production Design Joe Howard Art Director Gary Jopling Art Director David Morison Set Decoration Richard Sale Costume Design Anne McCarthy Casting Kellie Roy Casting Lucinda Syson Casting