‘Avengers: Age of Ultron’ revealed as Marvel sequel title at Comic-Con 

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Director Joss Whedon speaks at Marvel's The Avengers: Age Of Ultron announcement during Comic-Con International 2013 at San Diego Convention Center on July 20.

Ticket-buyers, assemble!

Marvel Studios dropped a Gamma-bomb sized spoiler at San Diego Comic-Con on Saturday night with the revelation that the title of the "Avengers sequel" will be "Age of Ultron."

As comic book readers know, Ultron is an indestructible, artificially intelligent robot that decides to take down the human race starting with the Avengers.

Marvel’s ‘The Avengers' flick was a box office blast: From left, Scarlett Johansson, Chris Hemsworth, Chris Evans, Jeremy Renner, Robert Downey Jr. (Iron Man), Mark Ruffalo (Hulk).

Given the importance of the robotic super hero Vision to the original Ultron storyline, the signs point squarely to Vin Diesel's role in the movie, as one of several new super heroes ready for their big screen debuts.

"Marvel meeting today...," the 45-year-old actor posted on his Facebook page two weeks ago with a poster of a 1963 cover of "The Avengers" in the background.

"Only the people in the room can tell you what was discussed...

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Ian Bassett dressed as the Submariner from 'The Avengers' attends Comic-Con July 19.

"P.s. Thanks to Our page, for pushing to make it happen... you know I get tunnel vision with my work... and after that meeting today... wow!"

Director Joss Whedon has already announced that team mainstays Scarlet Witch and Quicksilver will be in the sequel to the 2012 blockbuster that earned $1.5 billion worldwide at the box office.

PHOTOS: COMIC-CON 2013

It's also possible that original Avenger Ant-Man, aka Ultron's creator Dr. Henry Pym, will join the team. The character is already the subject of a standalone film to be written and directed by Edgar Wright.