History Deuteragonist / MarvelCinematicUniverse

* ''Series/WandaVision'':
* ''Series/TheFalconAndTheWinterSoldier'':

* ''Film/{{Black Widow|2021}}'':

* ''Film/ShangChiAndTheLegendOfTheTenRings'':

* ''Film/SpiderManNoWayHome'':

* ''Film/ThorLoveAndThunder'':

* ''Film/BlackPantherWakandaForever'':

* ''Film/AntManAndTheWaspQuantumania'':
* ''Film/GuardiansOfTheGalaxyVol3'':

''Franchise/MarvelCinematicUniverse'': As a whole (or at least in the Infinity Saga), either Steve Rogers or Tony Stark could be considered the deuteragonist to the other's protagonist [[note]] The argument for Steve being the protagonist is that he is chronologically the first superhero in the MCU, is TheLeader and has the most screen-time in both ''Avengers'' films and his standalone films are more plot-critical to the MCU as a whole than those of the other Avengers' more self-contained narratives. Tony's is that his film was the first in the series, he undergoes the most CharacterDevelopment across both his own films and the ''Avengers'', he is a major character even in other characters films, his presence (along with his family's) influences many of the films he doesn't appear in and he is ultimately the one to land the finishing blow on Thanos in the GrandFinale of the movie. [[/note]]while Thor is the undisputed tritagonist due to being the only other original Avengers member with his own film trilogy and having several elements of his films be vital pieces of the overall MythArc. Within the individual series, we have these:

* ''Franchise/MarvelCinematicUniverse'': As a whole (or at least in the Infinity Saga), either Steve Rogers or Tony Stark could be considered the deuteragonist to the other's protagonist [[note]] The argument for Steve being the protagonist is that he is chronologically the first superhero in the MCU, is TheLeader and has the most screen-time in both ''Avengers'' films and his standalone films are more plot-critical to the MCU as a whole than those of the other Avengers' more self-contained narratives. Tony's is that his film was the first in the series, he undergoes the most CharacterDevelopment across both his own films and the ''Avengers'', he is a major character even in other characters films, his presence (along with his family's) influences many of the films he doesn't appear in and he is ultimately the one to land the finishing blow on Thanos in the GrandFinale of the movie. [[/note]]while Thor is the undisputed tritagonist due to being the only other original Avengers member with his own film trilogy and having several elements of his films be vital pieces of the overall MythArc. Within the individual series, we have these:

* ''Franchise/MarvelCinematicUniverse'': As a whole (or at least in the Infinity Saga), either Steve Rogers or Tony Stark could be considered the deuteragonist to the other's protagonist [[note]] The argument for Steve being the protagonist is that he is chronologically the first superhero in the MCU, is TheLeader and has the most screen-time in both ''Avengers'' films and his standalone films are more plot-critical to the MCU as a whole than those of the other Avengers' more self-contained narratives. Tony's is that his film was the first in the series, he undergoes the most CharacterDevelopment across both his own films and the ''Avengers'', he is a major character even in other characters films, his presence (along with his family's) influences many of the films he doesn't appear in and he is ultimately the one to land the finishing blow on Thanos in the GrandFinale of the movie. [[/note]]while Thor is the undisputed tritagonist due to being the only other original Avengers member with his own film trilogy and having several elements of his films be vital pieces of the overall MythArc. Within the individual series, we have these:
** The ''Film/IronMan'' trilogy has Pepper Potts, Tony Stark's assistant and love interest.
** ''Film/{{The Incredible Hulk|2008}}'' has Betty Ross, Bruce Banner's love interest and the daughter of the man most set on catching Banner.
** The ''Film/{{Thor}}'' films have Loki as the overall deuteragonist -- [[ProtagonistTitle Thor himself is the protagonist of most of them]] -- but interestingly, [[SecondaryCharacterTitle Thor is actually the deuteragonist of his first movie]], with his love interest Jane Foster having the [[SupportingProtagonist primary point of view]] in that [[HumanFocusedAdaptation film]].
** The ''Captain America'' trilogy overall has James "Bucky" Barnes, Steve Rogers's best friend since childhood, in the role, though each film has a different deuteragonist:
*** ''Film/CaptainAmericaTheFirstAvenger'' has Peggy Carter, Steve's love interest and one of the original founders of ComicBook/{{SHIELD}}
*** ''Film/CaptainAmericaTheWinterSoldier'' has Natasha Romanoff.
*** ''Film/CaptainAmericaCivilWar'' has Tony Stark.
** ''Film/GuardiansOfTheGalaxy2014'': Even though it's a well rounded ensemble, Gamora is the deuteragonist and Drax is the tritagonist to Quill's protagonist. Gamora because she has more connection with the villains and is a possible love interest for Peter Quill. Drax because he is in a RoaringRampageOfRevenge against the villains responsible for killing his family and his CharacterDevelopment revolves around that. Rocket Raccoon, Groot and Yondu are mostly supporting characters.
** ''Film/GuardiansOfTheGalaxyVol2 '': Rocket Raccoon is the deuteragonist. The movie has a TwoLinesNoWaiting narrative and while the first one is about Quill, the second one is about Rocket. Gamora and Yondu are both tritagonists by virtue of being the second most important character in each of the two plots.
** ''Film/AntMan1'': Hank Pym; he's the original Ant Man and is the leader of the heroes. He has his own flashback story and the strongest connection to the villain. His daughter Hope van Dyne is being set up as the deuteragonist to Ant-Man in general, considering she gets title billing in the film's sequel, ''Film/AntManAndTheWasp''.
** ''Film/DoctorStrange2016'' has Karl Mordo as the film's deuteragonist since he has the second most amount of character development, he also gets the [[spoiler: final scene after the credits]]. [[Film/DoctorStrangeInTheMultiverseOfMadness The sequel]] has America Chavez replacing Mordo as the deuteragonist with the main conflict of the story being Strange protecting her from [[spoiler:Wanda]].
** ''Film/BlackPanther2018'': T'Challa is unquestionably the protagonist of the movie, but the story is also largely about Erik Killmonger, and much focus is placed on the differences between the two and how they ended up on such different paths. Frankly, Killmonger is deuteragonist, as opposed to being a co-protagonist, ''solely'' by virtue of being the BigBad -- especially since, [[MetaphoricallyTrue from a certain point of view]], ''TheBadGuyWins''.[[note]]Though an OmnicidalManiac, Killmonger also stands for the political viewpoint of [[https://en.wikipedia.org/wiki/Interventionism_(politics) inteventionism]], believing that Wakanda, an Afro-futurist CrystalSpiresAndTogas nation with advanced technology, should be helping the world. (Or, at least, using that advanced technology to conduct a FullCircleRevolution. He ''is'' an OmnicidalManiac.) T'challa, on the other hand, is an [[https://en.wikipedia.org/wiki/Isolationism isolationist]], holding the same view as previous kings: that Wakanda should just let the world handle its own affairs. The final scenes of the film show that Killmonger's influence has made its mark, as T'challa [[TakeAThirdOption takes a third option]] and has Wakanda begin TechnologyUplift efforts with the rest of the world.[[/note]]

** ''Film/CaptainMarvel2019'': While this is most definitely first and foremost the SuperHeroOrigin of Carol Danvers, the film also tells the story of Nick Fury from before he ever becomes the BigGood to the Avengers and S.H.I.E.L.D.