Ocean Master
fictional character appearing in comic books published by DC Comics

Ocean Master is a supervillain appearing in American comic books published by DC Comics. The character was created by Bob Haney and Nick Cardy and debuted in Aquaman #29 (September 1966). One of Aquaman's most recognized adversaries who is characterized to often plot to usurp his position as the ruling monarch of Atlantis, the character has been subjected to revisions over the years.
Originally, the character was Orm Curry Marius, Aquaman's wayward, human half-brother envious of his sibling's superhuman powers and status as a hero. Becoming an international marine criminal, he takes the name "Orm Marius" and "Ocean Master". Following Crisis on Infinite Earths, the character is retroactively depicted as half homo magi, of Inuit origin, and related to Aquaman through Atlan. This sorcerous and royal origin story heightens the dramatic stakes of his plots to usurp the throne of Atantis.
Following his revision in the New 52, he is definitively established as Orm Marius, a full-blooded Atlantean royal whose parents includes Queen Atlanna (also Aquaman's mother), King Orvax Marius (making him half-brother of Tula), and is a desendant of Atlan and Arion. This version holds xenophobic views towards humans and a desire to punish them for their role in marine pollution. Although he similar conspires to with the throne of Atlantis from Arthur, Orm is cast as a more benevolent but traditionalist ruler who is exiled by Aquaman, believing him a tyrant follow Orm's attack on the United States.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 18, 2026. The linked authority identifier is Q2096398. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1966.
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This entry incorporates text from “Ocean Master” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.