Jason Momoa

Arthur

Patrick Wilson

Orm

Yahya Abdul-Mateen II

Black Manta

Randall Park

Dr. Shin

Amber Heard

Mera

Nicole Kidman

Atlanna

Dolph Lundgren

King Nereus

Temuera Morrison

Tom

Lillah Indya Moore

Karshon

Pilou Asbæk

Kordax

Jani Zhao

Stingray

Vincent Regan

Atlan

Martin Short

Kingfish (voice)

John Rhys-Davies

Brine King (voice)

Natalia Safran

Council Lady

Samuel Gosrani

Mercenary Tech

Jay Rincon

Scientist #1

Sohm Kapila

Reporter

Ricardo Molina

Reporter

Ingrid Bisu

Pier Waitress

Grant Huggair

Surface Dweller

Osian Roberts

Atlantean Fighter Pilot #2

Jonny Vaughton

Atlantean Fighter Pilot #1

Jay McDonald

Ocean Freighter Captain

Jonathan Bremner

Octobot Mercenary #1

Jack Waldouck

Octobot Mercenary #2

Tyler Burger

Junior Baby

Maddox Cruz-Porter

Junior Baby

River Ao Moemoeā Green

Junior Baby

Nikau Keats Green

Junior Baby

Bodhi McCabe

Junior Baby

Elliot Oben-Perpa

Junior Baby

Lucian Oben-Perpa

Junior Baby

Arthur Rowe-Mayer

Junior Baby

Noah Rowe-Mayer

Junior Baby

Julie Chang

Reporter

Mark Kwak

Reporter

Dylan Silver

Reporter

Jon Birkbeck

Orm Suit Performer

Michael Oladele

Marine Warrior (uncredited)

Moe Essop

Pirate