X2 (often promoted as X2: X-Men United and promoted in the UK as X-Men 2) is a 2003 superhero film based on the fictional characters the X-Men. Directed by Bryan Singer, it is the second film in the X-Men film series. It stars an ensemble cast including Patrick Stewart, Hugh Jackman, Ian McKellen, Alan Cumming, Famke Janssen, Anna Paquin, Shawn Ashmore, Aaron Stanford, Brian Cox, Rebecca Romijn-Stamos, James Marsden, Halle Berry and Kelly Hu. The plot, inspired by the graphic novel God Loves, Man Kills, pits the X-Men and their enemies, the Brotherhood, against the genocidal Colonel William Stryker (Brian Cox). He leads an assault on Professor Xavier's school to build his own version of Xavier's mutant-tracking computer Cerebro, in order to destroy every mutant on Earth.

Development phase for X2 began shortly after X-Men. David Hayter and Zak Penn wrote separate scripts, combining what they felt to be the best elements of both scripts into one screenplay. Michael Dougherty and Dan Harris were eventually hired for rewrite work, changing characterizations of Beast, Angel and Lady Deathstrike. Sentinels and the Danger Room were set to appear before being deleted because of budget concerns. Filming began in June 2002 and ended that November. Most of the filming took place at Vancouver Film Studios, the largest production facility outside of Los Angeles in North America. Production designer Guy Hendrix Dyas adapted similar designs of John Myhre from the previous film. X2 was released in the United States on May 2, 2003 and became both a critical and financial success, earning eight nominations at the Saturn Awards and grossing approximately $407 million worldwide.

A film, also called a movie or motion picture, is a series of still or moving images. It is produced by recording photographic images with cameras, or by creating images using animation techniques or visual effects. The process of filmmaking has developed into an art form and industry.

Films are cultural artifacts created by specific cultures, which reflect those cultures, and, in turn, affect them. Film is considered to be an important art form, a source of popular entertainment and a powerful method for educating – or indoctrinating – citizens. The visual elements of cinema give motion pictures a universal power of communication. Some films have become popular worldwide attractions by using dubbing or subtitles that translate the dialogue into the language of the viewer.

Films are made up of a series of individual images called frames. When these images are shown rapidly in succession, a viewer has the illusion that motion is occurring. The viewer cannot see the flickering between frames due to an effect known as persistence of vision, whereby the eye retains a visual image for a fraction of a second after the source has been removed. Viewers perceive motion due to a psychological effect called beta movement.

Sir Patrick Stewart, OBE (born 13 July 1940) is an English film, television and stage actor, who has had a distinguished career in theatre and television. He is most widely known for his television and film roles, such as Captain Jean-Luc Picard in Star Trek: The Next Generation and its successor films, Professor Charles Xavier in the X-Men film series, and as the voice of Avery Bullock in American Dad!.

Stewart was born on 13 July 1940 in Mirfield, near Dewsbury in the West Riding of Yorkshire, England. He is the son of Gladys (née Barrowclough), a weaver and textile worker, and Alfred Stewart, a Regimental Sergeant Major in the British Army who served with the King's Own Yorkshire Light Infantry and previously worked as a general labourer and as a postman.

In a 2008 interview, Stewart said: "My father was a very potent individual, a very powerful man who got what he wanted. It was said that when he strode onto the parade ground, birds stopped singing. It was many, many years before I realised how my father inserted himself into my work. I've grown a moustache for Macbeth. My father didn't have one, but when I looked in the mirror just before I went on stage I saw my father's face staring straight back at me."

Hugh Michael Jackman (born 12 October 1968) is an Australian actor and producer who is involved in film, musical theatre, and television.

Jackman has won international recognition for his roles in major films, notably as action/superhero, period and romance characters. He is known for his role as Wolverine in the X-Men film series, as well as for his leads in Kate & Leopold, Van Helsing, The Prestige, Australia, and Real Steel. Jackman is a singer, dancer, and actor in stage musicals, and won a Tony Award for his role in The Boy from Oz.

In November 2008, Open Salon named Jackman one of the sexiest men alive. Later that same month, People magazine named Jackman "Sexiest Man Alive."

A three-time host of the Tony Awards, winning an Emmy Award for one of these appearances, Jackman also hosted the 81st Academy Awards on 22 February 2009.

Jackman was born in Sydney, New South Wales, the youngest of five children of English parents Chris Jackman and Grace Watson, and the second child to be born in Australia (he also has a younger half-sister, from his mother's re-marriage). One of his paternal great-grandfathers was Greek. His parents divorced when he was eight, and he remained with his accountant father and siblings, while his mother moved back to England. As a child, Jackman liked the outdoors, spending a lot of time at the beach and on camping trips and vacations all over Australia. He wanted to see the world: "I used to spend nights looking at atlases. I decided I wanted to be a chef on a plane. Because I'd been on a plane and there was food on board, I presumed there was a chef. I thought that would be an ideal job."

Sir Ian Murray McKellen, CH CBE (born 25 May 1939) is an English actor. He has won multiple Laurence Olivier Awards, a Tony Award, two Academy Award nominations, and five Emmy Award nominations. His work has spanned genres from Shakespearean and modern theatre to popular fantasy and science fiction. He is known for film roles such as Gandalf in the Lord of the Rings film trilogy, Magneto in the X-Men films, and as Sir Leigh Teabing in The Da Vinci Code.

McKellen was made a Commander of the Order of the British Empire in 1979, was knighted in 1991 for services to the performing arts, and was made a Companion of Honour for services to drama and to equality, in the 2008 New Year Honours.

McKellen was born in Burnley, Lancashire, England, though he spent most of his early life in Wigan. Born shortly before the outbreak of World War II, the experience had some lasting impact on him. In response to an interview question when an interviewer remarked that he seemed quite calm in the aftermath of the 11 September attacks, he said: "Well, darling, you forget — I slept under a steel plate until I was four years old."