Iron Man and Captain America- Heroes United (2014)

Parents need to know that Iron Man & Captain America: Heroes United is a 2014 computer-animated feature in which the two titular heroes work together to prevent the Red Skull from sending an army of Hydra Brutes out to conquer the world. The cartoon action violence is unrelenting. Characters are frequently fighting and doing battle -- either one-on-one or against vast armies -- utilizing every weapon at their disposal. It's a more "noir" version of Captain America and Iron Man, and this, in addition to the frequent violence, makes the movie best for older kids and up