On November 27, 2015, Director Ridley Scott announced that this film would be the second (following Prometheus (2012)) in a new Alien trilogy, which will take place closer to, and lead up to, the original film. He has since suggested that there may even be a fourth prequel film.

This movie contains a scene where a toy bird drinking water (named, aptly, a "drinky-bird") is visible. In the opening scene of Alien (1979), there is such a toy bird shown on board the Nostromo's bridge.

At one point, Daniels (Katherine Waterston) says, "I got you, you son of a bitch." Ellen Ripley uses these words at the end of Alien (1979).

This was the first "Alien" film to be released after the death of H.R. Giger. Giger inadvertently designed the original "Alien" looks and environments in his "Necronomicon" book, which led to Ridley Scott hiring him as Art Director for the film (and franchise). Giger essentially gave birth to the entire "Alien" look that we all know.

The original treatment for this movie, as revealed by director Ridley Scott in 2012, when the film was still in development, was to be a more faithful sequel to Prometheus (2012). Titled "Paradise Lost," it would have drifted even further from the "Alien" mythology, and focused almost exclusively on the backstory of the engineers, the origins of humanity, and how the engineers created humans and xenomorphs. The prequels would then conclude with a film that ties itself in to the original "Alien" movies. Ridley Scott pursued this idea because he felt that the "Alien" franchise lost its touch and was overdone and overexposed, and as such, wanted to try a different approach. However, due to the divided fan reactions of Prometheus (2012), Scott abandoned this direction and took a different approach instead, specifically to reintroduce the "Alien" mythos much sooner, with the classic Xenomorph.

The androids' names, David and Walter, are a tribute to Producers David Giler and Walter Hill.

When David is discussing the alien with the captain, he says it is "the perfect organism," just like Ash's head said in Alien (1979).

According to director Ridley Scott, principal photography for this movie took place in merely seventy-four days for one hundred eleven million dollars. It was finished on budget and on time.

The new planet, which is assumed to be the home of the engineers, is being referred to as a paradise, and could be the home of the "gods" who supposedly created humanity.

For the first time since Alien 3 (1992), an alien's point of view is shown. However, in this film, we see the alien's visual spectrum.

Some of the scenes were filmed in Sydney, Australia, at Fox Studios. Ridley Scott gave Michael Fassbender time off between takes, in order for him to attend the X-Men: Apocalypse (2016) premiere, held in the same area.

The name "Alien: Paradise Lost" was used to avoid confusion that resulted from disassociation with Prometheus (2012) from the "Alien" movies. The film was later re-titled to Alien: Covenant (2017).

The terrace surrounded by cypress trees, where David looks upon the Engineer's city, was inspired by the series of paintings depicting the "Isle of the Dead" by nineteenth century artist Arnold Böcklin. This was also a nod to "Alien" Creator H.R. Giger, who had crafted his interpretation of the same paintings, in his trademark bio-mechanical style, as a tribute to fellow Swiss Böcklin.

When David says to Daniels, "That's the spirit," it is a reference to Rutger Hauers' line in Blade Runner (1982), which was also directed by Ridley Scott.

The hairstyle that Daniels (Katherine Waterston) sports in this film was based on the wig worn by Ezra Miller, Katherine Waterston's co-star in Fantastic Beasts and Where to Find Them (2016). It was Miller, during a break while filming Beasts, who helped to film her audition video. While filming inside his trailer, she noticed the wig that he wore for his character, Credence, and asked him whether she could try putting it on, as she thought it was cool. What caught her interest in doing this film, was the two assurances by Ridley Scott in his offer letter: to film the required material from the actors quick, and in time; and constant engagement with the principal actors over their characters over dinner after each day of filming.

Each "Alien" film features a different type of group interacting with the Xenomorphs, which were miners in Alien (1979), the military in Aliens (1986), prisoners in Alien 3 (1992), smugglers in Alien: Ressurection (1997), archaeologists in Alien vs. Predator (2004), a combination of normal suburban humans, police force, and military in Aliens vs Predator: Requiem (2007), and research scientists in Prometheus (2012). While the main characters in this film are scientists, they are also colonists.

The music from Jerry Goldsmith's score for Alien (1979) was used extensively in the first act of this movie.

A scene establishing the crew of the Covenant was released as a prologue webisode titled "The Last Supper." Though it was not included in the theatrical cut, footage from the scene is prominently featured in the theatrical trailer.

This movie marked twenty years since Alien: Resurrection (1997) that the original Xenomorph was seen exclusively in an "Alien" film. It had also been ten years since the Xenomorph was seen again in a theatrical release, after Aliens vs. Predator: Requiem (2007).

Rebecca Ferguson was considered for the role of Daniels.

Despite the overt sexual themes and metaphors present in this franchise, because of the design of the Alien creatures in this species, this is only the second Alien film to contain any actual nudity, the first time was in Alien: Resurrection (1997). If one counts the poster of a nude woman briefly seen inside a marine's locker in Aliens (1986), and the magazine cut-outs of nude women in a crewmember's bunk in Alien, this would be the fourth film.

Guy Pearce's reprisal of his role as Peter Weyland in the opening prologue, marked Pearce's first appearance in the franchise, playing Weyland without old-age make-up. Pearce had been cast in Prometheus (2012) at forty-five years old, because an actor needed to play Peter Weyland both as an elderly man, and middle-aged, but ultimately the scenes featuring Weyland as a younger man were cut, and Pearce appeared in the film only under heavy old-age make-up.

This film is a sequel to Prometheus (2012), as well as the second installment in the "Alien" prequel series, the sixth installment overall in the "Alien" film franchise, and the third installment to be directed by Ridley Scott.

When Tennessee gains stable control of the lander, he says over the comms, "A walk in the park," just like Parker said after setting down the Nostromo lander during the storm in Alien (1979).

Walter breaks the pattern of the androids' names proceeding in alphabetical order (Ash, Bishop, Call, David). There is another pattern to their names, however. "D" is the fourth letter of the alphabet, and "W" is the fourth-to-last. The characters are named for David Giler and Walter Hill.

The subject of the poem Ozymandias is the ruins of Rameses II. Director Ridley Scott depicted the Biblical account of Rameses and the plagues of Egypt in Exodus: Gods and Kings (2014).

This film references Ozymandias at several occasions while Billy Crudup is present. Crudup played Dr. Manhattan in Watchmen (2009), where Ozymandias is the name of one of the main characters.

This was the second time Katherine Waterston and Carmen Ejogo had appeared in a movie together. The first time was in Fantastic Beasts and Where to Find Them (2016).

The date of the mission, listed at the beginning of the film, is December 5th, which is also the birthday of Walter Elias Disney. The synthetic in this film is named Walter (after Walter Hill).

This is the second film that Michael Fassbender and Katherine Waterston have appeared in together, the first being Steve Jobs (2015).

Rosenthal (Tess Haubirch) may be Jewish, as she wears a Star of David necklace the surname Rosenthal is also arguably of Jewish origin, coincidentally Jenette Goldstein who played Jeanette Vasquez in Aliens (1986) is also Jewish.

Several music cues and sound effects throughout the movie are identical the music and sound from Alien.

Katherine Waterston also appeared in Fantastic Beasts and Where to Find Them (2016), the beginning of a prequel series to the Harry Potter films. The Harry Potter film franchise also featured John Hurt, who appeared in Alien (1979), and Timothy Spall, whose son Rafe Spall appeared in Prometheus (2012). Fantastic Beasts also featured Samantha Morton, whose father-in-law is Alien (1979) cast member Ian Holm.

This film breaks the tradition within the Alien series, of each successive android's name following the alphabet. With Ash in Alien (1979); Bishop in Aliens (1986) and Alien 3 (1992); Call in Alien: Resurrection (1997) and David in Prometheus (2012). Here the android's name should begin with an "E" but instead it is called Walter.

Demián Bichir and Callie Hernandez both appeared in Machete Kills (2013).

During the final battle with the Alien, Daniels says there going to "blow this fucker into space." This is the exact line Ripley gives in the first Alien when describing how to get rid of that Alien

Katherine Waterston and Billy Crudup both also starred in Glass Chin (2014) together.

During his confrontation with Walter, David asks him if he'd rather "serve in Heaven or reign in Hell." The line refers to John Milton's poem "Paradise Lost", where Lucifer claims it is "better to reign in Hell than serve in Heaven." This fits with David's ultimate desire to no longer be subservient to mankind. In addition, "Paradise Lost" was the original subtitle for this film, before "Covenant" was chosen.

On an interview with BBC RADIO 2, Michael Fassbender revealed that a new type of alien creature will appear. On-set, it was referred to as a "neomorph."

The music that David plays, when confronted by Walter, is the same score that's played toward the end of Prometheus.

Walter indicates David's fallibility by pointing out he mistakenly identifies the author of the poem "Ozymandias" as Lord Byron, when it was written by Percy Bysshe Shelley. Among the ironies of David not being familiar with the poet, is that Shelley was the husband of Mary Wollstonecraft Shelley, who wrote the novel Frankenstein: A Modern Prometheus, in which a man-made creature educates himself, grows intelligent, and comes to hate his creator, as David has. Or conversely David himself could be analogous to Frankenstein, and suffer a similar fate by his own "creation" growing beyond his control.

Some elements that were omitted from Jon Spaihts' original script for Prometheus (2012) after a thorough re-write, seem to have been re-used here. These include David being much more malevolent, openly showing his disdain for humans, and using one of them as a victim for a facehugger. These elements had been removed by request of the studio, who wanted Prometheus (2012) to be more of a stand-alone movie within the franchise, rather than a true prequel to Alien (1979), but this strategy was abandoned for this movie.

When Daniels (Human) and David (Android) fight, she stabs him in the chin with a nail that she is wearing as a necklace, and David says "That's the spirit!" In Blade Runner (1982), Batty (Replicant) stabs himself in the hand with a similar nail and also says the line "That's the spirit!" to Deckard (Human) as they are fighting.

Danny McBride said he was pleasantly surprised to be cast against type in a mostly straight role, since he figured as a comedian he would be cast as an obnoxious "a**hole" who would be killed early in the movie.

A deleted scene shows the crew relaxing and having fun before they go off for cryosleep. In the scene, Branson (James Franco) talks about feeling ill, like he is "burning up." It is possible this was intended to foreshadow his fate.

The second time in the Alien franchise, in which the protagonist from a previous entry is killed before the next film occurs. In Aliens (1986), Hicks is implied to be a major character only to be killed off-screen at the beginning of Alien 3 (1992). Here, Elizabeth Shaw from Prometheus, who, at the end of that film, set off to discover why the engineers wanted to destroy us, is now killed before this film even begins.

The film continues the Lawrence of Arabia theme in connection to David's character that was explored in Prometheus. David sings "The Man Who Broke the Bank at Monte Carlo" during a scene of transformation. It highlights his prolonged isolation. In Lawrence of Arabia (1962), Lawrence sings this song as it echoes off cliffs, while alone in a valley.

The song David performs on the flute in front of Shaw's shrine is a callback to the theme music from Prometheus (2012).

David asked Walter if he ever dreams. This is possibly a nod to Philip K. Dick's "Do Androids Dream of Electric Sheep?", upon which the film Blade Runner (1982) was based.

In the beginning of the movie, Peter Weyland (Guy Pearce) explains to David that he is unable to create life, since he is not human. This is David's motivation later in the movie: To create the perfect form of life, using the crew of the Covenant as hosts.

At the end of the film, David asks Mother to play Das Rheingold, Act II, the Entry of the Gods into Valhalla. Das Rheingold has no second act. It is a continuous work with only one act comprised of 4 scenes. David might have meant scene two, but he still would have been wrong, as the Entry of the Gods into Valhalla doesn't occur until the end of scene 4.

David attacks Daniels in the necropolis, after she discovers David's plans for the Xenomorphs, in a room containing rolled up scrolls. In Alien (1979), Ash attacks Ripley after she discovers the company's orders to preserve the Xenomorph. Ash attempts to suffocate Ripley, by stuffing a rolled up sheaf of paper down her throat.

When David is talking to Walter, and is about to presumably kill him, he gives him a gentle kiss before he stabs him. This is a reference to the Blade Runner (1982) scene, where Roy Batty is talking to his creator (Dr. Tyrrell). He gives him a gentle kiss and kills him.

The synthetics' names are labeled A, B, C, and D, which stand for Ash, Bishop, Call, and David. This constitutes a break in one of the franchise's traditions, whereby the next synthetic seen in a subsequent movie, would have a first name starting with the next letter in the alphabet (in this case, this would have been an "E"). The theory to Walter could be, that he is the fourth last letter in the alphabet, which would pose as the opposite to David, who begins with the fourth letter in the alphabet, hinting at their opposite characters.

The Chinese edit of the film released in June features much less screentime of the aliens trimming the run-time down to 116 minutes. Wide-shots and some close-ups of the Xeno/Neo have been removed as well as David kissing Walter and other offensive material to the Chinese audience.

At around one hour and twelve minutes) Rosenthal (Tess Haubrich) encountering the fully-grown Neomorph, is similar to Alien (1979), when Brett encounters the fully-grown Xenomorph. Both characters even get killed by the creature, though in a different fashion (Rosenthal-Decapitation/Brett-Headbite).

The "burial" of Branson at the beginning of the movie mimics Kane's burial in the first Alien movie.

The captain of Covenant who is burned to death at the beginning, and is only seen in a video to his wife is actor James Franco.

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