Ryan Reynolds met his wife Blake Lively on the set of this film. They would get married in September 2012, and had a child in December 2014.

In the comics, Carol Ferris became Star Sapphire, originally an anti-heroine with similar abilities to the Green Lantern and revised later as soldier of the Star Sapphire Corps, an all-female force parallel to the Green Lantern Corps whose members carry on the violet light of love. In the film, Carol's flight call-sign is Sapphire, and the Star Sapphire logo can be seen on her helmet as she flies her jet.

Ryan Reynolds, who played the protagonist, famously hated the movie. He has admitted to having a poor working relationship with the director and was glad to see the film perform poorly critically and financially, as he did not wish to reprise his role as the Green Lantern. In his later movie Deadpool (2016), he references the Green Lantern in a negative way when he requests a suit that is neither green nor animated while being rolled into the medical room on a gurney; in the sequel Deadpool 2 (2018), he goes back into time, preventing himself from ever taking the Green Lantern role.

Carol's line "I've seen you naked! You think I wouldn't recognize you because you covered your cheekbones!" was an ad-lib by Blake Lively.

One of the Green Lanterns, Rot Lop Fan, wears a bell insignia rather than a lantern image on his chest. This is because his world gets almost no sunlight, so they never developed eyesight. Since he has no use for colors and lights, his symbol is an F-Sharp bell, which makes a tone pleasing to his species.

Ryan Reynolds and Martin Campbell clashed repeatedly on set. Campbell has stated in interviews that his first and only choice for the lead was Bradley Cooper. However, the studio was not willing to make an offer to him and ultimately cast Reynolds behind Campbell's back. This lead to an uncomfortable experience on set for Reynolds whose performance was constantly critiqued by Campbell who made him do many takes. Reynolds has stated in an interview with Variety that the film's failure was a huge relief as he had such an unpleasant experience and "dreaded doing it again."

To prepare for his role as Hector Hammond, Peter Sarsgaard spent time with a biologist from Tulane University, who he described as "the most eccentric guy I could find." They both worked on preparing the lecture Hammond gives in the film.

The comics vary on why the Green Lantern Abin Sur traveled in a spaceship when his ring could sustain him in space. The early comics say it was to prevent unnecessarily using the power on his ring; later versions presented him with a prophecy that his ring would fail him (which coincidentally came true at the moment his ship malfunctioned). In the movie, the spacecraft is an escape pod from a larger craft, meant as transport to evacuate a planet.

Kilowog derisively states that humans "think they're the center of the universe." The "Green Lantern" comic 'Blackest Night' revealed that Earth was in fact the birthplace of life throughout the whole universe, thus it was metaphorically the "center."

In Deadpool (2016), Wade Wilson (Ryan Reynolds) begs for his costume to be neither green nor animated, poking fun at Reynolds' earlier starring role in this movie.

Nathan Fillion was a fan-favorite choice to play Hal Jordan, as he had competently voiced the animated version of the character in Green Lantern: Emerald Knights (2011), Justice League: Doom (2012) and Justice League: The Flashpoint Paradox (2013).

In early 1997, Warner Bros. approached cult filmmaker/comic book writer Kevin Smith to script the film. Smith turned down the offer, believing there were other suitable candidates to make a Green Lantern movie.

At one point Clark Kent/Superman was in the script (he had a cameo as one of the candidates considered to receive a power ring), but he was cut out because the filmmakers didn't want to depend on another superhero for a success.

Carol describes the power ring as "magic," which Hal disagrees with. The Green Lantern comic originally started in 1940 as a fantasy series, with Alan Scott possessing a magic ring. (This character was originally to be called Alan Ladd, suggestive of "Aladdin's Lamp," but a Western movie actor had already cornered the franchise on that name.) When Green Lantern comics rebooted in 1959, science fiction had replaced fantasy as comics' popular fad, so the series ushered in Hal Jordan and the extraterrestrial Green Lantern Corps.

Michael Clarke Duncan, who voiced Kilowog, was a big fan of the character.

The Green Lantern uniform is portrayed in computer-generated imagery; this was a creative move by the filmmakers, who wanted the uniform not to be a real cloth outfit but an energy construct generated by the Lantern power ring. Notably the comics originally started with Hal Jordan having an actual uniform, but later this was amended.

Blake Lively indicated that if the film were successful enough, she would've like to portray Carol Ferris becoming Star Sapphire, as she does in the comics.

Geoffrey Rush was initially unsure about voicing the alien Tomar-Re, but he had previously voiced avian roles (he had played an owl in Legend of the Guardians: The Owls of Ga'Hoole (2010) and a pelican in Finding Nemo (2003)), and so when he saw an image of the birdlike Tomar-Re, he accepted the role. He had also noted that he had played various mentor roles before, so felt he would be more than comfortable with the role.

Carol Ferris says Hal has the ability to overcome great fear. In the comics this was an amendment of the Green Lantern Corps: one originally had to be without fear in order to be a Lantern, but this was later changed to being able to overcome their fears.

The design of Abin Sur and Sinestro's Green Lantern uniforms were incorporated into the DC comic 'Flashpoint'.

A "Central City" sign can be seen in the film. This is the comics home of Barry Allen/The Flash, beloved colleague of Hal Jordan/Green Lantern. Suggesting his appearance in a possible sequel.

Sam Worthington and Chris Pine were considered for the role of Hal Jordan. Brian Austin Green, a fan of the Green Lantern, campaigned actively to get the role. Bradley Cooper, Justin Timberlake and Jared Leto also screen-tested for the role before finally, Ryan Reynolds was cast as Jordan.

When Hal is giving a poorly wrapped gift to his nephew Jason, the present is seen to be a transparent S World Starfighter model. This is a nod to Wonder Woman's invisible jet, which shares a similar design.

Geoff Johns tried to get the film produced in 2000, but the first question he was asked was whether the film could be made without the ring. This discouraged him so badly that he didn't make another attempt until The Dark Knight (2008) released.

The late 1950s/early 1960s "Green Lantern" comic book characters were based on movie actors of the time. Hal Jordan and Carol Ferris (first appearing 1959) were based on Paul Newman and Elizabeth Taylor, and Thaal Sinestro and Hector Hammond (first appearing 1961) were based on David Niven and Burl Ives.

According to one insider, the film was severely hit with interference from Warner Bros: "One thing I feel needs mentioning: this is not Martin Campbell's cut of the film, but the studio's. I live in New Orleans where it was shot, I read the shooting script, all of which was painstakingly filmed with intense research, and all of that was left on the cutting room floor - a sort of combination of what happened to Daredevil (2003) and Watchmen (2009), respectively - character development sacrificed for CG, scenes made irrelevant by removing their setup. The movie in the theater starts with an explanation of mythos that is made redundant by the more natural, scripted questions from Hal when he gets the ring. Ten minutes of childhood Hal, Carol, and Hector that sets up Hal's first ring construct is reduced to an awkwardly placed flashback in the middle of another scene. The training with the ring is almost completely excised except for one minor scene. Most appallingly, the ending completely deletes the fact that Kilowog, Sinestro, and Toma-Re arrive at the end and help Hal defeat Parallax. Not to mention Parallax was supposed to be a 3rd act reveal after we spend the film worried about Hammond going evil, not the main villain for the entire film. I sincerely hope we get a director's cut or at least all the deleted scenes on the video release".

An early draft of the script contained a cameo by Alan Scott, the first Green Lantern (Jordan's predecessor, whose powers were magical rather than cosmic). Scott was going to be the United States President, and near the end would reveal his own past as a Green Lantern to Jordan, and give him his blessing. He was later revised to become an agent of the Checkmate agency (the Checkmate membership stayed true to the comics), who would approach and offer Jordan membership. Later drafts finally wrote him out of the film, and replaced him with Amanda Waller. Scott would have been played by Pierce Brosnan.

To prepare for Carol Ferris's action scenes, Blake Lively underwent training on the The Matrix (1999)'s aerial stunt rigs, assisted by acrobats from the "Cirque du Soleil" and supervised by noted stunt coordinator Gary Powell. She described it as a great experience: "I'm 40 feet in the air, spiralling around. That's the best workout you can ever do because it's all core... You do that for ten minutes and you should see your body the next day! It's so exhilarating, so thrilling - and nauseating."

It took 4-5 hours to apply the prosthetic make-up to turn Temuera Morrison into Abin Sur.

Peter Sarsgaard loved his look as Hector Hammond so much he declared himself the "king of the prostheses!"

This film was originally supposed to kick-off a Justice League series, and early drafts of the script even had a Clark Kent (Superman) cameo. However, after the failure of the film, this idea was scrapped, and a Justice League kick-off was put on hold until Man of Steel (2013) was used to start the series

In comics, Ryut, located in Sector 0666, was the home-world of Atrocitus, member of the devilish Empire of Tears which was exterminated by the Guardians of the Universe. Atrocitus created the vengeance-seeking Red Lantern Corps. In the movie, Ryut is located in the Lost Sector, and it's where Abin Sur imprisoned Parallax.

Martin Campbell heavily criticized the studio for hacking the film to pieces during the editing process, which he claims resulted in the omission or alteration of numerous elements which would have made for a stronger film.

Quentin Tarantino was considered to direct this film.

The first item Hal Jordan constructs during his first public appearance as Green Lantern is a giant Hot Wheels car and track. Just before he is chosen as Green Lantern he visits his nephew Jason, whose room has a Hot Wheels loop-the-loop track, from which Jordan launches a car as he exits the room.

Zack Snyder was approached to direct the film, but he turned down the offer due to his commitment on Watchmen (2009). He would later accept the offer to direct the Superman reboot Man of Steel (2013).

In 2007, actor-writer Corey Reynolds sent Warner Bros. a treatment, "Green Lantern: Birth of a Hero", with him writing and starring as John Stewart (his favourite superhero). Reynolds intended the film to be the first in a trilogy, and was going to introduce Hal Jordan, the Green Lantern Corps and the Justice League in the consecutive sequels. While his pitch was favourably received by the studio, it was abandoned in favour of a story about Hal Jordan.

The dialogue between Jordan and the Guardians on fear was taken verbatim from the "Green Lantern" comic 'Secret Origin' by 'Geoff Johns'.

Hal's sword construct was based on Martin Jordan's saber insignia from his flight jacket.

Taika Waititi got the role of Thomas "Pieface" Kalmaku due to his Maori-Jewish heritage: "There was an opening in the film for someone who was not-white or not-black."

It took 14 attempts by the hairdressers to get the correct brunette shade for Blake Lively's hair.

Keri Russell, Eva Green, Jennifer Garner and Diane Kruger were all considered to play Carol Ferris.

Peter Sarsgaard described Hector Hammond as an expression of what he keeps inside: "He's the kid that licked a battery, or went on the roof during a thunderstorm with a coat hanger."

Abin Sur's ring is seen to bear the Green Lantern symbol on the outside as a crest. In the comics, this kind of ring represents a member of the Green Lantern Honor Guard (normal GL rings have the symbol inside the ring's crest).

Angela Bassett joined the cast nine days into production.

The mid-credits scene was supposed to set the stage for a sequel. However due to the film's poor performance at the box office, Warner Bros. decided to abandon plans for a sequel.

The Green Lantern oath Hal Jordan recites in the film is the original created by the Guardians of the Universe and commonly used by most Lanterns. However, in the comics, a Green Lanterns' oath may change according to the Lantern who recites it.

At the start, Sinestro informs Abin Sur that 4 Green Lanterns have been killed by Parallax. One of the names he gives is Fentara Rrab. In comics this is the father of Arisia Rrab, a famous female Corps member.

The construct Tomar-Re demonstrates to Hal resembles a Möbius strip. In the "Green Lantern" comics of the Silver Age (1959-1970), this was often used as a form of greeting between Green Lanterns.

In the "Brightest Day" comic, Parallax is seen to have been transported to planet Ryut, chained it to a monolith bearing the Sinestro Corps symbol. In the film, Abin Sur imprisons Parallax to the planet Ryut, chained to a monolith bearing the Green Lantern Corps symbol.

Martin Campbell's favorite Green Lantern is Bzzd. He has also said that if he could become a Green Lantern, he would be Kilowog.

According to Martin Campbell, the visual influences in Parallax's design were the 9/11 terrorist attacks - "The images of those massive dust clouds coming down the streets from the collapsing World Trade Center are directly associated with terror" and Indian festival pictures - "fantastic pictures of this writhing mass of living beings".

Mark Strong enjoyed working on this film, and was disappointed that he couldn't do a sequel.

Eddie Murphy was considered to play John Stewart, another Green Lantern, but this character was ultimately cut from the script.

Hal Jordan's appearance as a Green Lantern pays tribute to his Green Lantern: First Flight (2009) look, where his suit was black with green armour (the white gloves which appear in the comics are omitted) and his eyes are blue (a disguise for the brown-eyed Jordan).

In Japan, the fear entity Parallax is renamed "Moso Dairinin" (Paranoia Agent). This refers to Paranoia Agent (2004), a critically acclaimed TV series about a similar entity.

Sequels were greenlit before the movie came out.

Kevin Kline was considered for the role of Senator Hammond.

Hugo Weaving, Jackie Earle Haley and Geoffrey Rush were considered to for the role of Sinestro. Rush went on to voice the Green Lantern Tomar-Re.

Ryan Reynolds was injured while shooting scenes for the film, separating his shoulder and was in "lots of pain".

David S. Goyer was offered the chance to write and direct either a Green Lantern or Flash film after Warner Bros. was impressed with his screenplay for Batman Begins (2005), but he opted to direct the latter.

The filmmakers originally intended to make a practical Green Lantern costume to be enhanced with CG but the more they experimented with the technology they knew they needed to make it fully CG, they didn't want to show audiences another rubber/spandex/leather superhero costume. But there is concept art for a more Batman-style armored GL look.

The explorers who crashed on the planet Ryut (where Parallax was imprisoned) at the start of the film, have the insignia for the Red Lantern Corps on the back of their suits.

In addition to Sinestro, Kilowog and Tomar-Re, some of the Green Lanterns seen in the movie when Hal Jordan visits Oa are secondary characters seen in Green Lantern comics: -Hannu (planet Ovacron 6, sector 0002: like-a-stone humanoid alien) -Apros (planet 7Pi, sector 0003: orange like-a-plant alien) -Naut Le Koi (planet Aeros, sector 0012: humanoid alien fish) -Larvox (planet Sputan, sector 0017: one-eyed six-armed Lantern) -Norchavius (planet Gra'var, sector 0026: mottled green, black and orange alien) -Voz (planet Eciram, sector 0571: like-a-bear alien) -MedPhyll (planet J586, sector 0586: one-eyed humanoid plant) -Morro (planet Sarc, sector 0666: blue thin like-a-monster alien) -R'amey Holl (planet Papillox, sector 0700: humanoid alien butterfly) -Rot Lop Fan (planet Obsidian Deeps, sector 0911: gray big-headed alien) -Galius Zed (planet Noc'Sag, sector 1123: head giant with small extremities) -Booddikka (planet Bellatrix, sector 1414; pink skin alien female) -Chaselon (planet Barrio III, sector 1416: four-armed alien crystal) -Salaak (planet Slyggia, sector 1418: pinkish orange skin four-armed alien) -Lin Canar (planet Fluvian, sector 1582: aquatic alien plant) -Bzzd (planet Aplaton, sector 2261: alien insect) -Isamot Kol (planet Thanagar, sector 2682: reptilian humanoid) -M'Dahna (planet Zanner, sector 2751: one-eyed alien with tentacle arms) -Green Man (planet Uxor, sector 2626: amphibious alien) -Stel (planet Grenda, sector 3009: alien robot) -Amanita (planet Muscaria, sector 3100: giant alien fungus) -Penelops (planet Penelo, sector 3155: giant one-eyed alien with tentacles)

In the comics and in the TV series Arrow (2012), Dr Amanda Waller is the leader of The Suicide Squad.

Around June 2006, Robert Smigel had completed a script of the film, which was a comedy-adventure and was to star Jack Black as Jud Plato, an original Lantern whose bravery was defined by eating brains on a TV show. However, the studio dropped the script idea due to extremely negative feedback from fans.

Martin Campbell based the film's action on knife fights in a phone booth: "quick and fast and dirty and big grand sweeping movements."

Hal Jordan's car is an orange 1971 Dodge Challenger R/T. Its license plate reads OSR145.

This is editor Stuart Baird's third superhero film, having previously worked on Superman (1978) and Superman II (1980) (the Zorro films are debatable).

Senator Hammond (played by Tim Robbins) is a character created specially for the movie. Hector Hammond's parents are never mentioned in the comics.

Not counting Filmation's The Superman/Aquaman Hour of Adventure (1967) or the Hanna-Barbara Challenge of the Superfriends (1978) show, this is only the second DC Comics feature where Hal Jordan has a major role. Previously, he only appeared in Green Lantern: First Flight (2009), and beyond that he made cameo appearances in an episode of Justice League (2001) and Duck Dodgers (2003) and had a supporting role in Justice League: The New Frontier (2008).

Actor-writer Corey Reynolds, a comic book fan of the John Stewart character, pitched Warner an idea for a trilogy, with him starring as John Stewart and performing screenwriting duties. Reynolds intended to introduce Hal Jordan, the Green Lantern Corps and Justice League in possible sequels. He finished the script for Green Lantern: Birth of a Hero in June 2007, receiving positive feedback from Warner Bros. with a potential 2010 release date. However, the studio abandoned Reynolds' concept.

In October 2007, Greg Berlanti signed to direct the film and co-write it with comic-book writers Michael Green and Marc Guggenheim. A draft of the trio's 2008 script, leaked on the Internet, revealed a story that included the hero's origin and included Clark Kent and Green Lanterns Alan Scott and Guy Gardner in a cameo appearance, and appeared "to set up Hector Hammond as Hal Jordan's ... first major nemesis...." However, Berlanti stepped down to instead direct This Is Where I Leave You (2014) and handed direction over to Martin Campbell. But he remained on board as a writer and producer. Later on, Berlanti's producing partner Andrew Kreisberg confirmed that the studio slashed Berlanti's original script

In the "1993" flashback scene it is said that Hal is 8, suggesting he was born in 1985. Ryan Reynolds was born in 1976, so if the movie is set in 2011, then he is playing a character 9 years younger than himself.

When Hal Jordan looks to charge his power ring the first time, he tries by saying "To infinity and beyond!" and "By the power of Grayskull!", two iconic quotes involving other sci-fi space heroes like Green Lantern. "To infinity and beyond!" is the leitmotiv of Buzz Lightyear from Toy Story (1995), while "By the power of Grayskull!" is the oath that Prince Adam of Eternia uses to turn in He-Man, from He-Man and the Masters of the Universe (1983).

In the movie, Oa's Central Power Battery is a giant version of the Green Lantern symbol they all have on the chest of their uniforms. In the original comics, the Power Battery was a giant version of the lantern that the Green Lanterns use to recharge their power rings. In addition, inside the movie's Power Battery can be seen the Green Lanterns' oath, written in the alien language Interlac.

Some wide shots of San Diego are used for Coast City. One of the shots shows Parallax over the San Diego Convention Center, which is the home of Comic-Con.

Clancy Brown (Parallax) had previously voiced another DC villain - Lex Luthor in Superman: The Animated Series (1996) and Justice League (2001).

While she had had been portrayed on the TV Show Smallville a few years earlier, this film marks the big screen debut of government bigwig Amanda Waller (here played by Angela Bassett). In 2015, Viola Davis was officially cast as Amanda Waller in the new DC Extended Universe, and made her debut in Suicide Squad in August 2016.

Comic book writer Geoff Johns, who has worked on the "Green Lantern" comic and made it a resounding success, was signed on as a creative consultant on the film.

When Greg Berlanti was in charge, he hired comic book writers Michael Green and Marc Guggenheim to work on the script.

When Jordan, in training, spars with Sinestro, one of his constructs is a chainsaw. This is a nod to the cancelled TV series pilot Justice League of America (1997), where Green Lantern Guy Gardner (Matthew Settle) created a chainsaw in a fight.

The Guardians of the Universe are inspired by David Ben-Gurion, Israel's first Prime Minister.

Greg Berlanti signed on to co-write and direct the film in 2007, but he stepped down to instead direct This Is Where I Leave You (2014) and handed direction over to Martin Campbell. However, he remained on board as a writer and producer.

The scriptwriters drew inspiration from the Green Lantern comics of Denny O'Neil, Neal Adams, and Dave Gibbons', as well as two past reboots of Hal Jordan's origin story: 'Emerald Dawn' (1987, a team effort of several writers) and 'Secret Origin' (a 2009 opus by 'Geoff Johns').

The filmmakers increased the budget by $9 million for additional VFX work.

Brian Austin Green, a Green Lantern fan, campaigned for the part of Hal Jordan, but ultimately did not audition.

This is Angela Bassett's first comic-book film.

The autonomous Sabre planes are named after the call sign of the father of Hal Jordan.

The first action of Hal Jordan as Green Lantern is saving Senator Hammond of a helicopter accident. This is a nod for Superman (1978), where the first action of Clark Kent as Superman is saving Lois Lane of a helicopter accident.

Tim Robbins and Mark Strong both appear in this movie. They both have also played characters code-named Merlin. Robbins in Top Gun and Strong in Kingsman: The Secret Service and Kingsman: The Golden Circle

Mark Strong plays the DC villain Sinestro. Strong went on to play another DC villain (Dr. Sivana) 8 years later in the movie "Shazam!" (2019).

At a point of the meeting between Hal Jordan and Tom Kalmaku in Jordan's house, the own Jordan jokes saying "I'm going for troubles". This scene appears in the trailer, but it was removed from the movie.

Hector Hammond screams seven times throughout the movie.

Melanie Hebert: New Orleans news anchor plays herself covering Hal Jordan's F-35 crash for Channel 11 Coast City.

The film's primary antagonist, the fear entity Parallax, was chosen as part of a long-term strategy for successive films: Sinestro would be corrupted by Parallax and form his own Corps with fear as their power source, while other entities of emotional power (Ion, The Butcher, Ophidian, Adara, Proselyte, The Predator, Nekron and The Entity) and their Corps are planned to make an appearance.

Originally Sinestro was to lead a squadron of Lanterns to Earth to fight off Parallax. This was changed to having Hal beat Parallax on his own to make him more heroic, and having the squadron rescue him at the last moment.

The primary antagonist in the film was originally going to be the Legion, an alien robot possessing the collective minds of an alien insectoid race. This would have been in keeping with the original comics, where Abin Sur was mortally wounded in a battle with the Legion. However, the Legion was rejected in favour of the fear entity Parallax.

In the comics, Sinestro's eyes are yellow with black sclera (in the humans it's white), but in the movie his eyes are green with white sclera. However, in the post-credits scene when he is possessed by Parallax his eyes turn yellow, a reflection of fear being the new source of his powers and in homage to his appearance in the comics.

The yellow ring of fear was originally created in Qward, Oa's evil version in the antimatter universe. In the movie it's created by the Guardians as a secondary weapon as the green power of will no longer seemed sufficient.

The climactic battle, where Hal Jordan sends Parallax into the sun, is a homage to the DC comic 'Final Night', where the sun was dying and a Parallax-possessed Jordan sacrificed himself to reignite it.

Early in the film when Abin-Sur and Sinestro are communicating on Abin-Sur's ship, just before Sinestro's hologram disappears,it momentarily becomes transfused with a flare of golden yellow (before disappearing altogether), foreshadowing his rise as a Yellow Lantern.

In the film, Hector Hammond is possessed by Parallax, the entity of fear. In the Green Lantern comic 'Brightest Day', Hammond is possessed by Ophidian, the entity of avarice.

Hal Jordan has an epiphany that fear must not be absent but overcome. In the comics it was the Green Lantern Kyle Rayner who first realized this truism.

In the comics, Hector Hammond acquires his telepathic powers when he is exposed to a radioactive rock from Abin Sur's spacecraft, used as a motor for the ship. In the movie, Hammond gets his powers when he is infected by Parallax during Abin Sur's autopsy.

A mannequin of Abin Sur was constructed for his autopsy.

The comics differ over what caused Abin Sur's mortal crash-landing on Earth. The original story says his ship was rendered inoperative by yellow radiation that surrounded the Earth; later comics mention his ship was damaged from a battle with a Red Lantern. The film combines both versions (battle with a being of yellow radiation).

A deleted scene following Parallax' escape was a prologue set in 1993 where 8-year-old Hal Jordan meets Carol Ferris and Hector Hammond just before Martin Jordan's fatal crash. In the comics Jordan met Ferris in his childhood, but not Hammond.

Peter Sarsgaard had a prosthetic applied on his head to portray Hector Hammond in the initial stages of his mutation. The scenes where Hammond's head actually enlarges were done in CGI.

In the comics, Hal Jordan was possessed by the fear entity Parallax. In the film this happens to Hector Hammond.

In his last fight Hector Hammond is settled down in a mechanical wheelchair. In the comics, Hammond moves using his psychic abilities because they rendered him unable to walk.

In the comics, Parallax is a living incarnation of fear. In the movie, Parallax is a former Guardian of the Universe (known in the comics by the name Krona) who was taken over by the yellow power of fear (reflecting his comic counterpart's decision to do the forbidden primarily for the sake of it.)

While sparring with Hal, Sinestro produces a circular shield. This could possibly be a nod to Captain America's shield, despite the fact they are separate comic universes ( DC & Marvel ). Captain America: The First Avenger (2011) opened the same year as this film and was far more successful.

Clancy brown(paralax) was also the voice in the green lantern animated series