History Main / CaptainFishman

* Franchise/DCExtendedUniverse: The half-human half-{{Atlant|is}}ean Arthur Curry/Aquaman (played by Creator/JasonMomoa), of course. Appearing for the first time in a cameo in ''Film/BatmanVSupermanDawnOfJustice'', he became a founding member of the [[SuperTeam Justice League]] in the [[Film/ZackSnydersJusticeLeague eponymous film]], then had his own solo adventure to claim the throne of Atlantis in ''Film/{{Aquaman|2018}}''.

** Black Manta is the title of a number of supervillains (a child raised as a slave by pirates, an autistic child experimented on by Arkham Asylum's medical staff, a mercenary out to avenge his father) who hold a particular animosity toward Aquaman. All examples are regular humans who wield PoweredArmor that allows them to traverse the oceans as well as any Atlantean and fires EyeBeams from its iconic visor. Being the arch nemesis to a member of the Justice League has given them enough clout among supervillains to be a part of their BigBadEnsemble, including the LegionOfDoom, the Secret Society of Super Villains, the Injustice League, and the ComicBook/SuicideSquad.

** The ''TabletopGame/HaltEvilDoer setting has Aquarius, the king of Atlantis, who takes Namor's HeelFaceRevolvingDoor to extremes as a member of the Psychotic Seven, a group of ends-justify-the-means heroes who everyone else sees as delusional villains. He's also descended from [[Literature/TwentyThousandLeaguesUnderTheSea Captain Nemo]].

** Aqualad, later Tempest (Garth), was first introduced in the 1960s as Aquaman's sidekick. However, it is only when he becomes a founding member of the original ''[[ComicBook/{{TeenTitans}} Teen Titans]]'' (in 1964) that he becomes the team's "token water-based hero" since his teammates are younger counterparts to the adult ''Justice League'': Robin to Batman, Donna Troy to Wonder Woman, Speedy (Roy Harper) to Green Arrow and Kid Flash (Wally West I) to Flash. Later incarnations through the years sometimes include him as the token aquatic hero.

** DC's Aquaman had its share of evil alternate counterparts, especially from Earth-3's [[Characters/{{JusticeLeagueOfAmericaCrimeSyndicate}} Crime Syndicate of America]]. An evil version appears in ''ComicBook/Trinity2008'' with the name Barracuda, with fish face and blue skin. Another version that is more of a [[Main/{{MirrorUniverse}} mirror counterpart]] to Aquaman is Sea King: debuting at the end of the crossover ''[[ComicBook/{{TrinityWar}} Trinity War]]'', he looked like Aquaman's [[https://comicvine.gamespot.com/aquaman-17-numbers/4000-42113/ edgier 1990s look]], albeit with a [[https://comicvine.gamespot.com/justice-league-dark-26-forever-evil-blight-the-hau/4000-440199/ purple outfit and a two-pronged harpoon hand]].

** Another member from Aquaman's rogue gallery, Ocean Master, is usually slotted into the water-based villain whenever there is a [[LegionofDoom Legion of Doom-esque]] team-up against the Justice League. He controls water using his scepter. In one example, during ''[[ComicBook/{{JusticeLeagueOfAmericaRockOfAges}} Rock of Ages]]'', Joker mocks him for wearing a "fish mask", although, to be fair, during the arc, he was wearing a black costume with a stylized manta ray on the chest.
** Following ''Comicbook/CrisisOnInfiniteEarths'', the ''Comicbook/AllStarSquadron'' had Neptune Perkins, an obscure UsefulNotes/{{Golden Age of Comic Books}} character who in his original appearance was just a marine biologist who needed to spend time in the ocean due to a sodium deficiency, reinvented as a descendent of [[Literature/TheNarrativeOfArthurGordonPymOfNantucket Arthur Gordon Pym]] and a member of an aquatic race he discovered at the Pole, to provide a fill-in for the RetGone Golden Age Aquaman.

* In Robert Liefeld's ''ComicBook/{{Youngblood}}'', Riptide is the water-based heroine. Despite some preview art in comic magazines of the late-80s, she only made her début in ''Youngblood'' (Vol. 1) #1, in the "B-Side" story. Her belated backstory was only revealed during ''[[ComicBook/{{YoungbloodJudgmentDay}} Youngblood: Judgment Day]]'': during a drowning accident, she was given powers by a Sea Witch. However, her backstory is an actual ''fabrication'', inserted into a [[Main/{{RealityWritingBook}} Reality-Altering Book]] by her father.

* ''WesternAnimation/TheVentureBrothers'':

[[caption-width-right:350:[[Franchise/SpiderMan They do whatever a fish can.]][[note]]Clockwise from top left: [[ComicBook/SubMariner Namor]], [[TabletopGame/YuGiOh Elemental HERO Ocean]], [[WesternAnimation/Invincible2021 Aquarus]] and [[WesternAnimation/TheFairlyOddParents Wet Willy]].[[/note]]]]

** Another member from Aquaman's rogue gallery, Ocean Master, is usually slotted into the water-based villain whenever there is a [[LegionofDoom Legion of Doom-esque]] team-up against the Justice League. He controls water using his scepter.

* Franchise/DCExtendedUniverse: The half-human half-{{Atlant|is}}ean Arthur Curry/Aquaman (played by Creator/JasonMomoa), of course. Appearing for the first time in a cameo in ''Film/BatmanVSupermanDawnOfJustice'', he became a founding member of the Justice League in the [[Film/ZackSnydersJusticeLeague eponymous film]], then had his own solo adventure to claim the throne of Atlantis in ''Film/{{Aquaman|2018}}''.

* Franchise/DCExtendedUniverse: The half-human half-{{Atlant|is}}ean Arthur Curry/Aquaman (played by Creator/JasonMomoa), of course. Appearing for the first time in a cameo in ''Film/BatmanVSupermanDawnOfJustice'', he became a foudning member of the Justice League in the [[Film/ZackSnydersJusticeLeague eponymous film]], then had his own solo adventure to claim the throne of Atlantis in ''Film/{{Aquaman|2018}}''.

* Franchise/MarvelCinematicUniverse: King K'uk'ulkan, better known as "Namor" to humanity, is King to a race of ApparentlyHumanMerfolk that had evolved from [[ModernMayincatecEmpire survivors of the Mayan race]] via a vibranium-infused plant. He is the only one of his kind that can breathe air, he has SuperStrength comparable to the Hulk, can fly via wings on his ankles, and is so beloved by his people, he is worshipped as though he were a God (which he might be since Gods do in-fact exist in the MCU). He is portrayed as an AntiVillain in his premier appearance in ''Film/BlackPantherWakandaForever'', trying to create an alliance with Wakanda out of the mutual threat of the rest of the world declaring war on them over their stock in vibranium.

** A lab accident involving an experimental gene-splicer resulted in Dr. Douglas Ong and his brother Charles being mutated with aquatic DNA, the former becoming the heroic Dr. Dugong and the former becoming the infamous Kingpin and Level-10 supervillain Wide Wale. While the former had his DNA spliced with benign sea creatures like seals and starfish, Wide Wale has bits of whale and shark in him, his daughter Sirena inheriting his mutant genes as an ApparentlyHumanMerfolk.

** Another member from Aquaman's rogue gallery, Ocean Master, is usually slotted into the water-based villain whenever there is a [[LegionofDoom -esque]] team-up against the Justice League. He controls water using his scepter.