In July 2010, it was confirmed that Whedon would write and direct The Avengers, a live-action adaptation of the superhero team of the same name.
On his desire to take on the film, he explained that the core of the movie was about "finding yourself from community" and the togetherness derived from a group that ultimately doesn't belong together.

It became the fourth-highest-grossing film of all time at the North American box office, and received considerable praise from critics.
In retrospect, Whedon thought the film had "imperfections," begrudging its quality in comparison to that of The Matrix and The Godfather Part II.
Nonetheless, he felt he "pulled off" the endeavor of making a summer movie reminiscent of those from his childhood.

In March 2012, Whedon stated that although television involves more compromise than film:
I think, ultimately, gun to my head, TV is the place.
Being able to spend years with a character, to really develop them, to understand them, to challenge the actor, to learn from the actor, to work with a team of writers – that experience is so fulfilling.
The idea of putting something out there and letting it grow is really exciting.

In August 2012, Whedon signed a deal to develop the Marvel TV show Agents of S.H.I.E.L.D. for ABC.
The series focuses on the secret military law-enforcement agency featured throughout the Marvel Cinematic Universe.
Created by Whedon, Jed Whedon and Maurissa Tancharoen, the show involves individuals who possess powers within the spectacle of science fiction, while also focusing on "the peripheral people ... the people on the edges of the grand adventures."
The character Phil Coulson was resurrected after his death in The Avengers to helm the show.

Whedon spoke about certain complications that factored in with making the show for Marvel, noting confusion between him and the company regarding the degree to which they wanted him to create it, citing their demand that he prioritize Avengers: Age of Ultron.
He once expressed regrets for having brought back Phil Coulson, feeling that his death had lost meaning as a result, but later clarified that he did not regret this decision.

Whedon returned to write and direct the sequel to The Avengers, following the deal with Marvel Studios, which expired in June 2015.
On the matter of approaching a sequel, Whedon reasoned not to go "bigger" but "deeper," and likened it to digging with a scalpel to cause pain.
He said of the film's characters, "Strong but damaged by power describes every person in this movie.
It may, in fact, describe what the movie is about ... the more power that we have, the less human we are."
Whedon discerns that Age of Ultron "is an odd film" that proved challenging when it came to finding the rhythm between both its calm and exciting moments.
Drawing parallels to a symphony, he wanted to bring about "grace in the middle of ultimate chaos."

Whedon also served as a creative consultant on the films in the Marvel Cinematic Universe leading up to Age of Ultron.
He rewrote some dialogue for Thor: The Dark World, directed the mid-credits scene of Captain America: The Winter Soldier, and suggested that James Gunn make Guardians of the Galaxy "weirder" after reading an early draft.
Whedon said it was unlikely that he would return to make another sequel, stating that he "couldn't imagine doing this again."
He remarked that not having created his own fictional universe in over five years felt wrong and intended to use the proceeds made from Avengers: Age of Ultron for such ventures.
In January 2016, Whedon announced that he will no longer work with Marvel.
In July 2010, it was confirmed that Whedon would write and direct The Avengers, a live-action adaptation of the superhero team of the same name. On his desire to take on the film, he explained that the core of the movie was about "finding yourself from community" and the togetherness derived from a group that ultimately doesn't belong together.
It became the fourth-highest-grossing film of all time at the North American box office, and received considerable praise from critics. In retrospect, Whedon thought the film had "imperfections," begrudging its quality in comparison to that of The Matrix and The Godfather Part II. Nonetheless, he felt he "pulled off" the endeavor of making a summer movie reminiscent of those from his childhood.
In March 2012, Whedon stated that although television involves more compromise than film:
I think, ultimately, gun to my head, TV is the place. Being able to spend years with a character, to really develop them, to understand them, to challenge the actor, to learn from the actor, to work with a team of writers – that experience is so fulfilling. The idea of putting something out there and letting it grow is really exciting.
In August 2012, Whedon signed a deal to develop the Marvel TV show Agents of S.H.I.E.L.D. for ABC. The series focuses on the secret military law-enforcement agency featured throughout the Marvel Cinematic Universe. Created by Whedon, Jed Whedon and Maurissa Tancharoen, the show involves individuals who possess powers within the spectacle of science fiction, while also focusing on "the peripheral people ... the people on the edges of the grand adventures." The character Phil Coulson was resurrected after his death in The Avengers to helm the show.
Whedon spoke about certain complications that factored in with making the show for Marvel, noting confusion between him and the company regarding the degree to which they wanted him to create it, citing their demand that he prioritize Avengers: Age of Ultron. He once expressed regrets for having brought back Phil Coulson, feeling that his death had lost meaning as a result, but later clarified that he did not regret this decision.
Whedon returned to write and direct the sequel to The Avengers, following the deal with Marvel Studios, which expired in June 2015. On the matter of approaching a sequel, Whedon reasoned not to go "bigger" but "deeper," and likened it to digging with a scalpel to cause pain. He said of the film's characters, "Strong but damaged by power describes every person in this movie. It may, in fact, describe what the movie is about ... the more power that we have, the less human we are." Whedon discerns that Age of Ultron "is an odd film" that proved challenging when it came to finding the rhythm between both its calm and exciting moments. Drawing parallels to a symphony, he wanted to bring about "grace in the middle of ultimate chaos."
Whedon also served as a creative consultant on the films in the Marvel Cinematic Universe leading up to Age of Ultron. He rewrote some dialogue for Thor: The Dark World, directed the mid-credits scene of Captain America: The Winter Soldier, and suggested that James Gunn make Guardians of the Galaxy "weirder" after reading an early draft. Whedon said it was unlikely that he would return to make another sequel, stating that he "couldn't imagine doing this again." He remarked that not having created his own fictional universe in over five years felt wrong and intended to use the proceeds made from Avengers: Age of Ultron for such ventures. In January 2016, Whedon announced that he will no longer work with Marvel.
Joss Whedon