David Cornelius of eFilmCritic. com said, "It's enough to tide fans over until the live action flick arrives. " Todd Gilchrist of IGN said that "there are some great details that really bring this story to life," concluding that the film is "not quite invincible, but for a film about a guy made out of iron, it's pretty tough. " Mike Pinsky of DVD Verdict said "the first act takes a very long time to get going," "the villains have no personality whatsoever," and "the art design and animation frame rate are really no better than the average television cartoon. " Pinsky added that "there are some nice touches" and "the third act does generate some suspense," but concluded that "given all these obstacles, I don't know if even Iron Man could win this battle. " Todd Douglass Jr. of DVD Talk said, "I enjoyed watching The Invincible Iron Man, but it didn't open any new doors for me as an Iron Man fan. From the start the story was pretty straightforward and predictable, though a few twists kept the adventure exciting along the way. Some of the character development also felt kind of forced to me with things simply happening for no reason other than to further the plot. " Douglass concluded, "In the end, The Invincible Iron Man should be considered an achievement by comic book fans. The solid adventure features a lot of action and a rich comic book atmosphere that will leave you wanting more DVDs just like it. "