The Flash in the context of "Gardner Fox"

DC Comics (originally DC Comics, Inc., and also known simply as DC) is an American comic book publisher owned by Warner Bros. Discovery. DC is an initialism for Detective Comics, a comic book series first published in 1937. DC Comics is one of the largest and oldest American comic book companies, the first comic under the DC banner being published in 1937.

The majority of its published stories are set in the fictional DC Universe and feature numerous culturally iconic heroic characters, such as Superman, Batman, Wonder Woman, and the Flash; as well as famous fictional teams, including the Justice League, the Teen Titans, the Suicide Squad, and the Legion of Super-Heroes. The universe contains an assortment of well-known supervillains, such as Lex Luthor, the Joker, Darkseid, and the antiheroic Catwoman. The company has published non-DC Universe-related material, including Watchmen, V for Vendetta, Fables, and many other titles, under the alternative imprint Vertigo and DC Black Label.

The DC Universe (DCU) is a fictional shared universe in which most stories in American comic book titles published by DC Comics take place. In context, the term "DC Universe" usually refers to the main DC continuity. It contains various superheroes such as Superman, Batman, Wonder Woman, Green Lantern, the Flash, and Aquaman; as well as teams such as the Justice League, the Suicide Squad, and the Teen Titans. It also contains well-known supervillains, including the Joker, Lex Luthor, Brainiac, Deathstroke, the Reverse-Flash, and Darkseid.

The Flash is a 2023 American superhero film based on the DC Comics character Barry Allen / The Flash. Directed by Andy Muschietti from a screenplay by Christina Hodson and a story by the writing team of John Francis Daley and Jonathan Goldstein alongside Joby Harold, it is the 13th film in the DC Extended Universe (DCEU). Ezra Miller stars as Barry Allen, who travels back in time to prevent his mother's death and becomes stranded in an alternate past. Sasha Calle also stars in her film debut, alongside Michael Shannon, Ron Livingston, Maribel Verdú, Kiersey Clemons, Antje Traue, and Michael Keaton. Barbara Muschietti and Michael Disco produced the film for DC Films and Warner Bros. Pictures.

Development on a film featuring the Flash began in the late 1980s, with various iterations planned through 2014, when it was redeveloped for the DCEU and Miller was cast. Multiple writers and directors were attached over the following years, with Seth Grahame-Smith, Rick Famuyiwa, Daley, and Goldstein all departing the project over creative differences with the studios. Muschietti and Hodson became involved in July 2019, and pre-production began in January 2020. Influenced by the 2011 comic book storyline Flashpoint, the film explores the multiverse and features other DC characters, such as Calle's Supergirl and multiple versions of Batman, particularly Keaton's portrayal from the films Batman (1989) and Batman Returns (1992), while others were digitally included. Filming lasted from April to October 2021 at Warner Bros. Studios Leavesden and on location throughout the United Kingdom. The film's ending was altered several times during post-production due to changes in DC's wider plans under different studio leadership.

Eobard Thawne, also known as the Reverse-Flash or Professor Zoom, is a supervillain appearing in American comic books published by DC Comics. Created by John Broome and Carmine Infantino, the character first appeared in The Flash #139 (September 1963) and has since endured as the archenemy of Barry Allen / The Flash. Eobard Thawne, as introduced by name in The Flash #153, is the first and most well-known character to assume the Reverse-Flash mantle, and is additionally a descendant of Malcolm Thawne and ancestor of Bart Allen, Thaddeus Thawne and Owen Mercer.

In his post-Crisis on Infinite Earths comic book appearances, Professor Eobard Thawne is depicted as a scientist from the 25th century who originally idolized the Flash. He replicated the accident that gave the Flash his powers, but was driven insane and became obsessed with ruining the Flash's life upon learning that he was destined to become his greatest enemy–the Reverse-Flash. Fueled by jealousy and hatred, Thawne travels throughout time to torment and destroy the Flash's life. He has been established as one of the fastest speedsters in the DC Universe. Thawne has frequently died, but has made multiple returns through resurrections and time travel.

Geoffrey Johns (born January 25, 1973) is an American comic book writer, screenwriter, and film and television producer. Johns's work on the DC Comics characters Green Lantern, Aquaman, The Flash, and Superman has drawn critical acclaim. His critically acclaimed work includes Sinestro Corps War, Blackest Night, Infinite Crisis, Throne of Atlantis, Flashpoint, Doomsday Clock, Superman: Last Son, and Superman: Brainiac. He co-created the DC character Courtney Whitmore based on his deceased sister. He also expanded the Green Lantern mythology, adding in new concepts and co-creating numerous characters. Among the DC characters and concepts he co-created are the Sinestro Corps, the Indigo Tribe, the Red Lantern Corps, the Black Lantern Corps, Larfleeze, Atrocitus, Bleez, Jessica Cruz, Simon Baz, Hunter Zolomon, Tar Pit, Miss Martian, Kate Kane, and Christopher Kent.

He served as Chief Creative Officer (CCO) of DC Entertainment from 2010 to 2018 and as President and CCO from 2016 to 2018.