Thor

Thor Odinson is a superhero appearing in American comic books published by Marvel Comics. Created by artist Jack Kirby, writer Stan Lee, and scripter Larry Lieber, the character first appeared in Journey into Mystery #83 (1962) and first received his own title with Thor #126 (1966). Thor is an adaptation of the deity of the same name from Norse mythology, and many aspects of Thor's character are based on Norse myth. Comic books featuring Thor have been published across several volumes since the character's introduction.

Thor is one of the gods of Asgard and the son of the Asgardian king Odin. In addition to his Asgardian strength and extended lifespan, Thor wields control over the weather, including rain and lightning. He also carries the enchanted hammer Mjolnir that enhances his abilities and grants him the ability to fly. Thor was first introduced as the alter ego of surgeon Donald Blake who acquired Thor's power, but this was later revealed to be a fabrication by Thor's father. Thor has since assumed other human identities and at times ruled as king of Asgard.

Hulk

The Hulk is a superhero appearing in American comic books published by Marvel Comics. Created by writer Stan Lee and artist Jack Kirby, the character first appeared in the debut issue of The Incredible Hulk (May 1962). In his comic book appearances, the character, who has dissociative identity disorder (DID), is primarily represented by the alter ego Hulk, a green-skinned, hulking and muscular humanoid possessing a limitless degree of physical strength, and the alter ego Dr. Robert Bruce Banner, a physically weak, socially withdrawn, and emotionally reserved physicist, both of whom typically resent each other.

Following his accidental exposure to gamma rays while saving the life of Rick Jones during the detonation of an experimental bomb, Banner is physically transformed into the Hulk when subjected to emotional stress, at or against his will. This transformation often leads to destructive rampages and to conflicts that complicate Banner's civilian life. The Hulk's level of strength is normally conveyed as proportionate to his level of anger. Commonly portrayed as a raging savage, the Hulk has been represented with other alter egos, from a mindless, destructive force (War), to a brilliant warrior (World-Breaker), a self-hating protector (the Devil/Immortal), a genius scientist in his own right (Doc Green), and a gangster (Joe Fixit).

Iron Man

Iron Man is a superhero appearing in American comic books published by Marvel Comics. Co-created by writer and editor Stan Lee, developed by scripter Larry Lieber, and designed by artists Don Heck and Jack Kirby, the character first appeared in Tales of Suspense #39 in 1963, and received his own title with Iron Man #1 in 1968. Shortly after his creation, Iron Man was a founding member of a superhero team, the Avengers, with Thor, Ant-Man, the Wasp, and the Hulk. Iron Man stories, individually and with the Avengers, have been published consistently since the character's creation.

Iron Man is the superhero persona of Anthony Edward "Tony" Stark, a businessman and engineer who runs the weapons manufacturing company Stark Industries. When Stark is captured in a war zone and sustains a serious heart wound, he builds his Iron Man armor and escapes his captors. Iron Man's suits of armor grant him superhuman strength, flight, energy projection, and other abilities. The character is used to explore political themes, and early Iron Man stories prominently featured Cold War politics. Later stories explored other themes, such as civil unrest, technological advancement, corporate espionage, alcoholism, and governmental authority.

Captain America

Captain America is a superhero created by Joe Simon and Jack Kirby who appears in American comic books published by Marvel Comics. The character first appeared in Captain America Comics #1, published on December 20, 1940, by Timely Comics, a corporate predecessor to Marvel. Captain America's civilian identity is Steve Rogers, a frail man enhanced to the peak of human physical perfection by an experimental "super-soldier serum" after joining the United States Army to aid the country's efforts in World War II. Equipped with an American flag-inspired costume and a virtually indestructible shield, Captain America and his sidekick Bucky Barnes clashed frequently with the villainous Red Skull and other members of the Axis powers. In the final days of the war, an accident left Captain America frozen in a state of suspended animation until he was revived in modern times. He resumes his exploits as a costumed hero and becomes leader of the superhero team the Avengers, but frequently struggles as a "man out of time" to adjust to the new era.

The character quickly emerged as Timely's most popular and commercially successful wartime creation upon his original publication, though the popularity of superheroes declined in the post-war period and Captain America Comics was discontinued in 1950. The character saw a short-lived revival in 1953 before returning to comics in 1964, and has since remained in continuous publication. Captain America's creation as an explicitly anti-Nazi figure was a deliberately political undertaking: Simon and Kirby were stridently opposed to the actions of Nazi Germany and supporters of U.S. intervention in World War II, with Simon conceiving of the character specifically in response to the American non-interventionism movement. Political messages have subsequently remained a defining feature of Captain America stories, with writers regularly using the character to comment on the state of American society and government.

Captain Marvel

Captain Marvel is a 2019 American superhero film based on Marvel Comics featuring the character Carol Danvers / Captain Marvel. Produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures, it is the 21st film in the Marvel Cinematic Universe (MCU). The film was directed by Anna Boden and Ryan Fleck from a screenplay they co-wrote with Geneva Robertson-Dworet. It stars Brie Larson as Carol Danvers, alongside Samuel L. Jackson, Ben Mendelsohn, Djimon Hounsou, Lee Pace, Lashana Lynch, Gemma Chan, Annette Bening, Clark Gregg, and Jude Law. Set in 1995, the story follows Danvers as she becomes Captain Marvel after Earth is caught in the center of a galactic conflict between two alien civilizations.

Development of the film began by May 2013. It was officially announced in October 2014 as Marvel Studios' first female-led superhero film. Nicole Perlman and Meg LeFauve were hired to write the film the following April after submitting separate takes on the character, and borrowed elements from Roy Thomas' 1971 "Kree–Skrull War" comic book storyline. Larson was announced as Danvers at the 2016 San Diego Comic-Con, with Boden and Fleck hired to direct in April 2017. Robertson-Dworet was soon hired to re-write the script, with the rest of the cast added by the start of filming. Location shooting began in January 2018, with principal photography starting that March in California and concluding in Louisiana in July 2018. Several actors reprise their roles from previous MCU films in Captain Marvel, including Jackson and Gregg who were digitally de-aged in post-production to reflect the film's 1990s setting.