Iron Man and Hulk: Heroes United

Iron Man and Hulk: Heroes United is a 2013 American computer-animated action adventure direct-to-video film directed by Eric Radomski and Leo Rileyand, produced by Marvel Animation and Brain Zoo Studios and written by Brandon Auman, and Henry Gilroy. It features the voices of Adrian Pasdar, Fred Tatasciore, and Dee Bradely Baker. Featuring the Marvel comic book characters Iron Man and the Hulk, it is the first in the Heroes United direct-to-video series with its sequel Iron Man and Captain America: Heroes United coming out the following year.

Plot
Iron Man and Hulk must work together to stop the energy creature Zzzax from stealing all of the energy on Earth.

Why It Sucks

 * 1) The animation looks absolutely dreadful. All of the characters in the film move unnaturally with awful looking action scenes that was clearly rushed to reach a deadline.
 * 2) The characters also look terrible. They look like models from an unreleased video game. Iron Man, Hulk, and later the Red Skull in the post-credit scene have uncanny looking faces that sometimes don't have their lips match the words that come out of their mouths. It is especially noticeable on Tony when he is shown from inside the Iron Man costume and this happens multiple times throughout the film.
 * 3) *Additionally, there aren't many characters presumably due to a small budget. The two Hydra scientists look alike and the Abomination and Zzzax have the exact body structure. The one thing that they don't have are civilians living in the cities where some of the fight scenes take place which is a problem because the two heroes say that people's lives are at stake when we don't see anyone in danger.
 * 4) The plot is very weak with there being multiple fight scenes and many clichés that have been done to death such as two main characters first having a shaky relationship until they become friends through teamwork by the end of the film.
 * 5) Hulk is a total wimp in the film. Even though during exposition dialogue in the beginning of the film calls him the most powerful character person in the world, he first loses to the Abomination, then Iron Man, and later Zzzax when he and Iron Man first encounter him. What's insulting about Iron Man defeating Hulk in a fight is he created the hulkbuster armor specifically fighting the Hulk in the comics and the mh:greatestmovies:Marvel Cinematic Universe but here he doesn't need it and easily outsmarts him using only his standard armor. The thing is though is that the hulkbuster armor does make an appearance first when Tony spars against it with Jarvis controlling it, and later the Hulk himself is wearing it for the final battle against Zzzax. It's like the writers had no idea why the hulkbuster armor was created in the comics in the first place.
 * 6) Speaking of the Hulk, he talks way too much which can seem unnerving to people who are used to him saying "Hulk smash!" or other similar phrases in third person from other forms of media. The reason he acts like this is because Bruce Banner never makes an appearance nor is he ever mentioned about in the entire film. Funnily enough, Zzzax speaks in a way that the Hulk would talk in the comics.
 * 7) *Come to think of it, he acts like Professor Hulk due to him speaking coherent sentences and showing some intelligence.
 * 8) Iron Man and Hulk's fight when they first meet is very contrived just so there could be another fight scene. Iron Man says that he and the Hulk are good friends and yet because Jarvis tells him of gamma energy where the Hulk is he automatically assumes it's because of him. If they were really friends then Tony would first ask Hulk what happened before jumping to conclusions.
 * 9) When the Hulk wears the hulkbuster armor, Tony says that it's for his protection so Zzzax doesn't blind him again, and yet when he's shown with the armor on, he immediately removes the helmet because he doesn't like it. Without the helmet, his eyes are vulnerable to Zzzax so why didn't Tony tell him to keep it on? He never brings it up during the battle but the Hulk's eyes end up being fine anyway which begs the question: why did Iron Man gave him the hulkbuster armor to begin with and not just repulsor gauntlets to shoot beams of energy at Zzzax?
 * 10) The cemetery scene where Iron Man and the Hulk fight Wendigos has no purpose to the plot whatsoever. They were shown briefly when the Abomination drags the Hulk to Hydra headquarters, but their inclusion here comes out of nowhere as the film takes place in the United States and not in Canada where they usually are shown. You can remove the Wendigos and the plot would remain the same.
 * 11) While the voice acting is mostly good, Adrian Pasdar was a poor choice as Iron Man as his voice sometimes sounds too high as if he's a teenager and not an adult.
 * 12) Tons of unfunny lines due to the film being made for kids with the Hulk never shutting up about being hungry.

Redeeming Qualities

 * 1) Fred Tatasciore and Dee Bradley Baker do a good job voicing their characters.
 * 2) There are a few moments where Hulk acts like he should such as when he uses Iron Man as a club to smash robots and when he grabs Zzzax and smashes him on the ground repeatedly which ultimately defeats him.

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Reception
The film received a mixed-to-negative reception discounting it as nothing more than a kids movie with many citing the visuals not only looking cheap, but also looking like a video game that you can't actually play. It currently has a IMDb user score of 4.8/10 and on Letterboxd it has a user score of 2/5.

With the movie selling poorly at retail, the second and final movie in the Heroes United series, Iron Man and Captain America: Heroes United, was never released physically and was released as straight-to-digital.