Marvel Studios, originally Marvel Films, is an American television and motion picture studio based in Manhattan Beach, California. Marvel Studios is a subsidiary of Marvel Entertainment, a self-contained part of the The Walt Disney Company conglomerate.

Since 2008, the studio has released six independently produced films — Iron Man (2008), The Incredible Hulk (2008), Iron Man 2 (2010), Thor (2011), Captain America: The First Avenger (2011), and Marvel's The Avengers (2012) — with shared timeline, cast and characters, making up the Marvel Cinematic Universe.

During what is known as Marvel's Timely era, Captain America was licensed out to Republic Pictures for a serial just for the free advertising. Except they failed to give any drawing of Captain America with his shield or any further background, thus Republic created a whole new background including him having a gun.

In the late 1970s up to the early 1990s, Marvel Entertainment Group (MEG) sold options to studios to produce films based on Marvel Comics characters. Spider-Man, one of Marvel’s superheroes, was optioned in the late 1970s, and rights reverted back to Marvel in April 1996 without a film having been produced. From 1986 to 1996, most of Marvel’s major characters had been optioned, including the Fantastic Four, X-Men, Daredevil, Hulk, Silver Surfer, and Iron Man. A Howard the Duck film made to the screen in 1986, but was a box-office flop. With MEG purchased by New World Entertainment, New World moved to produced films based on the Marvel characters, but one movie, The Punisher (1989), came out of New World before MEG was sold to Andrews Group. Two other films were produced: Captain America (1990) released in the United Kingdom on screens and direct to video in the United States, and The Fantastic Four (1993), not intended for release. Marvel's rival DC Comics, on the other hand, had success licensing its properties Superman and Batman into blockbuster films.

Captain America is a fictional character, a superhero who appears in comic books published by Marvel Comics. The character first appeared in Captain America Comics #1 (cover-dated March 1941), from Marvel Comics' 1940s predecessor, Timely Comics, and was created by Joe Simon and Jack Kirby. As of 2007, an estimated 210 million copies of "Captain America" comic books had been sold in 75 countries. For nearly all of the character's publication history, Captain America was the alter ego of Steve Rogers, a frail young man who was enhanced to the peak of human perfection by an experimental serum in order to aid the United States war effort. Captain America wears a costume that bears an American flag motif, and is armed with an indestructible shield that can be thrown as a weapon.

An intentionally patriotic creation who was often depicted fighting the Axis powers of World War II, Captain America was Timely Comics' most popular character during the wartime period. After the war ended, the character's popularity waned and he disappeared by the 1950s aside from an ill-fated revival in 1953. Captain America was reintroduced during the Silver Age of comics when he was revived from suspended animation by the superhero team the Avengers in The Avengers #4 (March 1964). Since then, Captain America has often led the team, as well as starring in his own series.

Mark Alan Ruffalo (born November 22, 1967) is an American actor, director, producer and screenwriter. He starred in films such as Eternal Sunshine of the Spotless Mind, Zodiac, Shutter Island, Just Like Heaven, Collateral, You Can Count on Me, The Avengers, and The Kids Are All Right, for which he received an Academy Award nomination for Best Supporting Actor.

Ruffalo was born in Kenosha, Wisconsin. His mother, Marie Rose (née Hebert), is a hairdresser and stylist, and his father, Frank Lawrence Ruffalo, Jr., worked as a construction painter. His father and maternal grandmother were of Italian descent, and his maternal grandfather was of French Canadian ancestry. He has two sisters, Tania and Nicole, and a brother, Scott, who died in December 2008. Ruffalo has described himself as having been a "happy kid" and his upbringing as taking place in a "very big" family with "lots of love". Of his father, Ruffalo has said, "He was an amazing, charismatic guy who was city high school wrestling champion three times. He was away a lot when I was growing up. I was very lonely for him.” Ruffalo was raised Roman Catholic; he attended both a Catholic and a progressive school. Ruffalo spent his teen years in Virginia Beach, Virginia, where his father worked. He graduated from First Colonial High School, and then moved with his family to San Diego, and later to Los Angeles, California. There, he took classes at the Stella Adler Conservatory and co-founded the Orpheus Theatre Company. With the OTC, he wrote, directed, and starred in a number of plays, and spent the next nine years earning his money as a bartender.

Robert John Downey Jr. (born April 4, 1965) is an American actor who made his screen debut in 1970 at the age of five, appearing in his father's film Pound, and has worked consistently in film and television ever since. During the 1980s, he had roles in series such as coming of age films associated with the Brat Pack. His role in Less Than Zero (1987) was the first time Downey's acting would be commended by critics. After Zero, Downey was cast in starring roles in bigger films, such as Air America (1990), Soapdish (1991), and Natural Born Killers (1994). He played Charlie Chaplin in the 1992 film Chaplin, for which he received an Academy Award nomination for Best Actor.

Between 1996 and 2001, Downey was frequently arrested on drug-related charges. After being released from the California Substance Abuse Treatment Facility and State Prison in 2000, Downey joined the cast of the hit television series Ally McBeal playing the new love interest of Calista Flockhart's title character. His performance was praised and received accolades, but his character was written out when Downey was fired after two drug arrests in late 2000 and early 2001. After one last stay in a court-ordered drug treatment program, Downey finally achieved lasting sobriety and his career began to take off again. He appeared in semi-independent films such as The Singing Detective (2003), Kiss Kiss Bang Bang (2005), and A Scanner Darkly (2006). He also had supporting roles in the mainstream films Gothika (2003) and Zodiac (2007). In 2004, Downey released his debut studio album The Futurist.