Black Manta seeks revenge on Aquaman for his father's death. Wielding the Black Trident's power, he becomes a formidable foe. To defend Atlantis, Arthur (Aquaman) forges an alliance with his imprisoned brother. They must protect the kingdom.
| Arthur | Jason Momoa |
| Orm | Patrick Wilson |
| Black Manta | Yahya Abdul-Mateen II |
| Dr. Shin | Randall Park |
| Mera | Amber Heard |
| Atlanna | Nicole Kidman |
| King Nereus | Dolph Lundgren |
| Tom | Temuera Morrison |
| Karshon | Indya Moore |
| Kordax | Pilou Asbæk |
| Stingray | Jani Zhao |
| Atlan | Vincent Regan |
| Kingfish (voice) | Martin Short |
| Brine King (voice) | John Rhys-Davies |
| Council Lady | Natalia Safran |
| Mercenary Tech | Samuel Gosrani |
| Scientist #1 | Jay Rincon |
| Reporter | Sohm Kapila |
| Reporter | Ricardo Molina |
| Pier Waitress | Ingrid Bisu |
| Surface Dweller | Grant Huggair |
| Atlantean Fighter Pilot #2 | Osian Roberts |
| Atlantean Fighter Pilot #1 | Jonny Vaughton |
| Ocean Freighter Captain | Jay McDonald |
| Octobot Mercenary #1 | Jonathan Bremner |
| Octobot Mercenary #2 | Jack Waldouck |
| Junior Baby | 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 |
| Reporter | Julie Chang |
| Reporter | Mark Kwak |
| Reporter | Dylan Silver |
| Orm Suit Performer | Jon Birkbeck |
| Jesse Kane (archive footage) (uncredited) | Michael Beach |
| Marine Warrior (uncredited) | Michael Oladele |
Aquaman and the Lost Kingdom on Wikipedia
Aquaman and the Lost Kingdom on IMDb
