[[caption-width-right:350:The [[FanNickname Science Bros]] [[Film/TheAvengers2012 return]]!]]
''Iron Man & Hulk: Heroes United'' is an animated CGI movie released by Creator/MarvelAnimation, featuring a team-up between ComicBook/IronMan and the ComicBook/IncredibleHulk. The film features the two heroes teaming up to fight Zzzax, a powerful being made of electrical energy. The movie features Creator/AdrianPasdar as Tony Stark/Iron Man, and FredTatasciore as the Hulk, Creator/DeeBradleyBaker as Zzzax, and a number of other Marvel animated projects.

According to Marvel TV head Creator/JephLoeb, the movie does not have any explicit continuity ties to the Franchise/MarvelCinematicUniverse, though it could potentially be seen as a bridge between ''Film/{{The Avengers|2012}}'' and ''Film/IronMan3''.

July 2014 saw the release of a sequel, ''WesternAnimation/IronManAndCaptainAmericaHeroesUnited''.
!!Tropes applying to ''Iron Man & Hulk: Heroes United''

* AllCGICartoon: Aside from the intro sequence with comic-style art the cartoon is entirely in CGI.
* BrickJoke: The Hulk never did get anything to eat, as he notes at the end.
* CanonForeigner: Fump and Cruler are unique to this film.
* CasualDangerDialog: Abomination's approach to fighting his nemesis the Hulk can best be described as "relaxed".
* CreepyCemetery: Iron Man and Hulk end up in one, Tony even lampshades the trope. Then they have to fight wendigos in it.
* EnergyBeings: Zzzax is described as living PureEnergy, the result of a HYDRA experiment with Arc Reactor technology and Gamma radiation gone awry.
* TheFaceless: The HYDRA scientists wear identical bodysuits with masks, leaving no part of their bodies uncovered.
* GrievousHarmWithABody: Hulk uses Iron Man for this.
* LetsYouAndHimFight: Due to lack of communication Iron Man and the Hulk end up fighting each other when they first meet.
* MechaMooks: HYDRA has a few robots mostly used for subdual purposes, and Tony has his own mandroid force. Both kinds serve primarily as hosts for Zzzax.
* MythologyGag: While it might not be an official part of the Franchise/MarvelCinematicUniverse, it has a few nods to it.
** Tony's mandroids are stamped with the SHIELD logo from the MCU.
** JARVIS is an AI as opposed to a human butler.
** [[spoiler:Red Skull leads HYDRA just like in Film/CaptainAmericaTheFirstAvenger, and his FacelessGoons look like the ones in that film as well.]]
* [[NeverTrustATrailer Never Trust a Magazine]]: ''Entertainment Weekly'' listed Creator/FredTatasciore as the voice actor of Hulk and Bruce Banner, the latter of whom doesn't appear in this movie.
* PoorCommunicationKills: Pretty much the first thing Iron Man does when seeing Hulk at the site of a gamma-powered anomaly is to assume that Hulk's responsible. The end result is the aforementioned LetsYouAndHimFight.
* PowerArmor: Not just for Tony; Hulk gets to wear pieces of the Hulkbuster suit when facing Zzzax in the final act.
* ShoutOut: The Mandroids and other technology makes the ''Franchise/TransformersGeneration1'' transformation noise when cranking up. Further proof of a Transfan on the staff is Zzzax saying "Humans inferior! Zzzax superior!"
* TheStinger: [[spoiler:Red Skull appears and announces that he has plans for Iron Man and Captain America...]]
* TemporaryBlindness: The Hulk suffers from this during the middle of the film and Tony has to help him fight.
* ThoseTwoBadGuys: HYDRA scientists Dr. Fump and Dr. Cruler.
* TronLines: The Abomination has radioactively green lines all over him.
* {{Wendigo}}: A whole pack of them is first seen hanging around the power plant, then they fight Hulk and Iron Man later on. [[FailedASpotCheck JARVIS claims they're just a myth as he's scanning them.]]
* WolverinePublicity: Hulk and Iron man are starting to rival Wolverine for the sheer amount of stuff they have on the airwaves.
* YouHaveFailedMe: Subverted in TheStinger, [[spoiler:the HYDRA mook expects that Red Skull will do this to Fump and Cruler, but the Skull recognizes that he needs their expertise for his next plan.]]