Oscar-winner Robert Downey Jr. announced his return to the Marvel superhero films during a blockbuster Disney presentation at Comic-Con Saturday, as the company attempts to reinvigorate its all-time record-grossing movie franchise.

Harrison Ford and Pedro Pascal were also officially unveiled among a batch of new stars joining the movie franchise, which has grossed an unprecedented $30 billion at the box office, but in recent years has suffered a number of high-profile flops.

Marvel film president Kevin Feige unveiled new details about multiple upcoming superhero movies in front of a crowd of screaming devotees at the San Diego, California gathering on Saturday -- but nobody drew a louder reaction than the returning Downey Jr.

The actor, who launched the entire Marvel movie universe with 2008's "Iron Man," will return as a totally different character -- Doctor Doom, a........

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