Captain America, Iron Man and the new "Avengers: Age of Ultron" villain made their debut on the cover of Entertainment Weekly.

[Warning: this article contains possible plot spoilers!]

"Avengers: Age of Ultron" will be making an appearance of San Diego Comic Con International.   In the upcoming Marvel film, the Avengers want a break from fighting but S.H.I.E.L.D no longer exists and there more destruction is heading their way.

The chaos begins when Tony Stark creates a robot to replace the super hero team.   The Avengers are tired and need some rest, but Robert Downey Jr. explained to EW there are no breaks for super heroes.

"What you said about abdication is apt, but I think it's also about recognizing limitations," Downey said. "The downside of self-sacrifice is that if you make it back, you've been out there on the spit and you've been turned a couple times and you feel a little burned and traumatized."

Director Joss Whedon explained Ultron is on a mission to "save" humanity from.  Ultron has superior intelligence, but lacks human empathy.  Soon enough, Ultron becomes his own entity and can no longer be controlled by Stark.

"Ultron is mean Ultron sees the big picture and he goes, 'Okay, we need radical change, which will be violent and appalling, in order to make everything better'; he's not just going 'Muhaha, soon I'll rule!'" Whedon told EW.

Check out images of "Avengers: Age of Ultron" here and the Marvel Comic Con lineup here. In other Marvel news, one Avenger in particular is making headlines as his replacement was announced. 

Actor Chris Hemsworth may be out a job soon as Thor is being replaced by a female.  No, it's not the female version of Thor, but rather the only Thor worthy of wielding the hammer.

"The inscription on Thor's hammer reads 'Whosoever holds this hammer, if HE be worthy, shall possess the power of Thor.' Well it's time to update that inscription," Marvel editor Wil Moss said in a statement. "The new Thor continues Marvel's proud tradition of strong female characters like Captain Marvel, Storm, Black Widow and more. And this new Thor isn't a temporary female substitute - she's now the one and only Thor, and she is worthy!"