Thor (Marvel Comics) in the context of "Marvel Comics"

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 1962 (cover dated March 1963) and received his own title with Iron Man #1 in 1968. Shortly after his creation, Iron Man became a founding member of the superhero team, the Avengers, alongside 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 was captured in a war zone and sustained a severe heart wound, he built his Iron Man armor and escaped his captors. Iron Man's suits of armor grant him superhuman strength, flight, energy projection, and other abilities. The character was created in response to the Vietnam War as Lee's attempt to create a likeable pro-war character. Since his creation, Iron Man has been used to explore political themes, with early Iron Man stories being set in the Cold War. The character's role as a weapons manufacturer proved controversial, and Marvel moved away from geopolitics by the 1970s. Instead, the stories began exploring themes such as civil unrest, technological advancement, corporate espionage, alcoholism, and governmental authority.

Marvel Comics is a publisher of American comic books and related media. It counts among its characters such well-known superheroes as Spider-Man, Wolverine, Iron Man, Captain America, Thor, Hulk, Black Panther, Doctor Strange, Ant-Man, Daredevil, and Deadpool, and such teams as the Avengers, the X-Men, the Fantastic Four, and the Guardians of the Galaxy. Most of Marvel's fictional characters are depicted in a shared fictional universe, with most locations mirroring real-life places. Many major characters are based in New York City.

Films based on Marvel Comics properties have included theatrically released film serials, live action and animated feature films, direct-to-video releases, and television films.

Stan Lee (born Stanley Martin Lieber /ˈliːbər/; December 28, 1922 – November 12, 2018) was an American comic book writer, editor, publisher and producer. He rose through the ranks of a family-run business called Timely Comics which later became Marvel Comics. He was Marvel's primary creative leader for two decades, expanding it from a small publishing house division to a multimedia corporation that dominated the comics and film industries.

In collaboration with others at Marvel – particularly co-plotters and artists Jack Kirby and Steve Ditko – he co-created iconic characters, including Spider-Man, the X-Men, Iron Man, Thor, the Hulk, Ant-Man, the Wasp, the Fantastic Four, Black Panther, Daredevil, Doctor Strange, the Scarlet Witch, and Black Widow. These and other characters' introductions in the 1960s pioneered a more naturalistic approach in superhero comics. In the 1970s, Lee challenged the restrictions of the Comics Code Authority, indirectly leading to changes in its policies. In the 1980s, he pursued the development of Marvel properties in other media, with mixed results.

Lawrence D. Lieber (/ˈliːbər/; born October 26, 1931) is an American comic book writer and artist best known as co-creator of the Marvel Comics superheroes Iron Man, Thor, and Ant-Man. He is also known for his long stint both writing and drawing the Marvel Western Rawhide Kid and for illustrating the newspaper comic strip The Amazing Spider-Man from 1986 to 2018. From 1974 to 1975, he was editor of Atlas/Seaboard Comics. Lieber is the younger brother of Stan Lee, who had been a writer, editor, and publisher of Marvel Comics.

Jack Kirby (/ˈkɜːrbi/; born Jacob Kurtzberg; August 28, 1917 – February 6, 1994) was an American comic book artist, widely regarded as one of the medium's major innovators and one of its most prolific and influential creators. He grew up in New York City and learned to draw cartoon figures by tracing characters from comic strips and editorial cartoons. He entered the nascent comics industry in the 1930s, drawing various comics features under different pen names, including Jack Curtiss, before settling on Jack Kirby. In 1940, he and writer-editor Joe Simon created the highly successful superhero character Captain America for Timely Comics, predecessor of Marvel Comics. During the 1940s, Kirby regularly teamed with Simon, creating numerous characters for that company and for National Comics Publications, later to become DC Comics.

After serving in the European Theater in World War II, Kirby produced work for DC Comics, Harvey Comics, Hillman Periodicals and other publishers. At Crestwood Publications, he and Simon created the genre of romance comics and later founded their own short-lived comic company, Mainline Publications. Kirby was involved in Timely's 1950s iteration, Atlas Comics, which in the next decade became Marvel. There, in the 1960s, Kirby co-created many of the company's major characters, including Ant-Man, the Avengers, the Black Panther, the Fantastic Four, the Hulk, Iron Man, the Silver Surfer, Thor, and the X-Men, among many others. Kirby's titles garnered high sales and critical acclaim, but in 1970, feeling he had been treated unfairly, largely in the realm of authorship credit and creators' rights, Kirby left the company for rival DC.

The Avengers are a superhero/antihero team appearing in American comic books published by Marvel Comics, created by writer-editor Stan Lee and artist/co-plotter Jack Kirby. The team made its debut in The Avengers #1 (cover-dated September 1963). Labeled "Earth's Mightiest Heroes", the original Avengers consisted of Iron Man, Ant-Man, Hulk, Thor, and Wasp. Captain America was discovered trapped in ice in issue #4, and joined the group after they revived him. The Avengers are an all-star ensemble cast of established superhero characters from the Marvel Comics portfolio.

Diegetically, these superheroes usually operate independently but occasionally assemble as a team to tackle especially formidable villains. This in contrast to certain other superhero teams such as the X-Men, whose characters were created specifically to be part of their team, with the team being central to their identity. The Avengers were created to create a new line of books to sell and to cross-promote Marvel Comics characters.