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The Flash is an American superhero television series developed by Greg Berlanti, Andrew Kreisberg, and Geoff Johns, airing on The CW. It is based on the DC Comics character Barry Allen / Flash, a costumed superhero crime-fighter with the power to move at superhuman speeds. It is a spin-off from Arrow, existing in the same fictional universe. The series follows Allen, portrayed by Grant Gustin, a crime scene investigator who gains super-human speed, which he uses to fight criminals, including others who have also gained superhuman abilities.

Backstage of the Series


On July 30, 2013, it was announced that Arrow co-creators Greg Berlanti and Andrew Kreisberg, Arrow pilot director David Nutter, and DC Comics CCO Geoff Johns would develop a television series based on the Flash for The CW, and it would detail Barry Allen's origin. Kreisberg revealed after the announcement that Allen would first appear as a recurring character on Arrow in three episodes of season two—all written by Berlanti, Kreisberg and Johns—and the last of the episodes would act as a backdoor pilot for the new show. Kreisberg added that Allen would be a forensic scientist and the introduction of his superpowers, as well as the reactions to this, will be very human and grounded. Johns stated that the character of the Flash in the show would resemble his comic book counterpart, complete with his trademark red costume, and not be a poor imitation. Kreisberg elaborated: "No sweat suits or strange code names; he will be The Flash." While researching the best way to depict the Flash's lightning speed, Johns stated it would not just be the standard "blurring around". Barry ultimately appeared twice in Arrow's second season, with the planned backdoor pilot cancelled in favor of a traditional pilot by The CW executives, who had been impressed by early cuts of Barry's first two episodes on Arrow. This allowed the creative team to flesh out Barry's story and his world on a bigger budget, as opposed to a backdoor pilot's constraint of incorporating characters from the parent show. The pilot was officially ordered on January 29, 2014, and was written by Berlanti, Kreisberg, and Johns, and directed by Nutter. On May 8, 2014, The Flash was officially picked up as a series, with an initial order of 13 episodes. Three more scripts were ordered in September 2014 following a positive response to newly completed episodes by executives, while a back ten was ordered the next month for a full 23-episode season. With the commencement of production on the series' second season, former Arrow and Ugly Betty writer Gabrielle Stanton was promoted to executive producer and showrunner; after having served as consulting producer and writer on the first season's finale "Fast Enough". However, it was later reported that Kreisberg would be returning to sole showrunner duties at an unspecified time. That time was later proved to be at the start of 2016, "Potential Energy", when Stanton was no longer credited as being involved with the show. In May 2017, it was reported that Aaron Helbing would be departing the series. Helbing had served as a writer since the first season, and as co-showrunner, along with his brother Todd and Kreisberg, since the second.


The costume was designed by Colleen Atwood, who also designed the costumes for Arrow. It features a burgundy color scheme, a masked helmet, and gold accents throughout, and went through multiple adjustments from the moment it was placed in computer renderings to the day of filming the pilot. Primarily made of leather, the suit contains areas with a stretchable material to allow Gustin room to bend. According to Atwood "It was all about a costume that could sell speed, Grant [Gustin] was continually moving in the suit, so it had to be designed to make that all happen visually and functionally." It initially took Gustin approximately 40 minutes to get into his costume, as the first cowl was prosthetic and had to be zipped and glued to his face. This was cut down to approximately 15 minutes by episode eight, when designers were able to develop a new cowl that easily slid over Gustin's face and locked into place. Maya Mani replaced Atwood as the costume designer for the second season and made slight changes to the Flash costume, such as changing the color of his crest from yellow to white, being faithful to the Flash costume from the comics.


Production on the pilot began in March 2014, with filming taking place in Vancouver, British Columbia; additional filming for the series takes place in Portland, Oregon. On how action sequences are shot for the series, compared to Arrow, Gustin said, "When [Arrow] shoot[s] action sequences, pretty much what you see is what you get and they're really doing everything. We do a lot of plate shots that are empty shots of the area we’re going to be in and then they’re putting us in later in post. I do a lot of the fighting. I don’t have to do it full speed and then they ramp it up and a lot of people have to freeze and I keep moving. Then I have to clear frame and step back into frame. It’s really tedious stuff that we have to do. On theirs, they learn fight choreography and they shoot it from the perfect angles and what you see is what you get." Production on the third season began in early July 2016.


Arrow composer Blake Neely is the primary composer of the series, and was first hired in April 2014 to score the pilot.[42][43] He had previously composed a theme for Barry Allen which was featured in Arrow's season two episodes "The Scientist" and "Three Ghosts". The theme was titled "The Scientist" when it was released on the Arrow: Season 2 soundtrack. According to Neely, "It had to be different [from Arrow] ... but it also couldn't be so different that it couldn't fit in the Arrow universe, ... it had to be in a style that could hold hands with Arrow." On December 18, 2014, WaterTower Music released a selection of music from The Flash/Arrow crossover episodes, as well as two bonus tracks from their respective 2014 midseason finales. The first season, two-disc soundtrack was released on October 16, 2015. The second season's soundtrack was released digitally on July 22, 2016, and in CD format on July 26, 2016.

Sound design

The sound design for the show is handled by Mark Camperell. The sound effect for Barry is made up of elements of thunder, electricity, jets, fireballs, and various custom whooshes and impacts. Speaking about designing the sound for The Flash's ability, Mark says: "My approach for the sounds of The Flash’s ability was to editorially treat him like a really aggressively driven hot rod. This doesn’t mean that I used car sounds for him, though. What I mean is that when thinking about how to edit his sounds, I thought about it like cutting a car chase."

Summaries of the Series

Season 1

Barry Allen is a young scientist working for the Central City police. When he was 11, he saw his mother being killed by a mysterious entity, his father was charged and he was serving a sentence for a crime he did not commit. One day in an accident caused by the explosion of a particle accelerator in the Harrison Wells laboratories, makes Barry an exceptional person able to run at extreme speeds. For the whole world, he is a scientist who works for the police, but secretly, he uses his speed to fight crime and find other people like him, meta-humans. However, his primary goal is to find out who killed his mother and to do justice to his father.

Season 2

Barry's time travel has created a portal to an alternative Earth (called Earth-II), where they all have an alter-ego. In this universe, lives Zoom, a serial killer, with the same powers as Barry and desperate to be the fastest man in the universe; he decides to send several meta-humans to kill Barry. Fortunately, the latter can always count on Cisco, Caitlin, Iris and Joe to help him, but also on the arrival of Jay Garrick, the Flash of the Earth-II.

Season 3

Barry finally went back in time to save his mother, which totally changed the present. This alternate universe is named Flashpoint. Barry quickly notices the changes: Joe and Iris do not talk anymore, Caitlin has the powers of Killer Frost that she did not have before, the brother of Cisco is dead and meanwhile, he discovers that he has a new colleague ... In addition, Barry is quickly confronted with Dr. Alchemy, a strange masked man capable of giving power to anyone, then to the scary Savitar, who considers himself the God of Speed ...

Season 4

To expiate his faults of having created the Flashpoint and affected the temporal flow, Barry voluntarily took the Force Velocity. Six months after his death, a samurai appears and threatens to destroy Central City if he does not confront Flash. With the help of Caitlin, Cisco manages to free Barry, who saves Iris and destroys the samurai, who was an android. However, Barry is again confronted with new meta-humans, created by the escape of dark matter escaped upon his release, and the appearance of the dangerous future future enemy, mentioned by Savitar: Clifford DeVoe, the Thinker, a human formidable, as intelligent as it is ingenious and who is at the origin of the events that have occurred.





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