Prop Master Russell Bobbitt had difficulty finding the cassette decks used in the first film, and all of the Sony Walkman headphones they found were broken. Bobbitt contacted Sony to see if they had any available for filming. They didn't, so he eventually created six from scratch.
According to the visual effects artists, Ego's planet contains one trillion polygons, and is considered to be the biggest visual effect ever made.
Dave Bautista's Drax make-up took 90 minutes to apply, down from three hours for the first film. However, he would have to sit in a sauna at the end of the day, to get the make-up off.
James Gunn choreographed and served as the motion-capture model for Groot's dance during the opening credits sequence. It took the visual effects team nearly two years to complete the CG rendering of the scene for the final film.
According to Chris Pratt, the script helped him come to terms with the death of his father and helped his son come to terms with his father's job.
In the Guardians of the Galaxy comics, Taserface is a warrior from the cybernetically enhanced race known as The Stark. The Stark are a race that found Iron Man technology that accidentally crashed on their homeworld, and as a result, worship Tony Stark (Iron Man) as their god.
As Groot only communicates with the phrase "I am Groot," in different inflections, James Gunn created a "Groot Version" of the script for him and Vin Diesel, which contained each of Groot's lines in English.
According to James Gunn, Groot always freezes when Drax catches him dancing because he knows Drax disapproves of it. Drax explains that he was attracted to his late wife because she steadfastly did not dance.
Bradley Cooper recorded his lines for Rocket while wearing a motion-capture headpiece in the recording studio, to perfectly synchronize Rocket's voice and facial expressions. In the first film, Cooper only supplied the voice.
Elizabeth Debicki was cast as Ayesha because of her 6'3" (1.91m) height. During filming she wore platform shoes to increase her height to 6;7" (2.01m).
In the comics, Mantis was human, and acquired her skills by living with the Kree. James Gunn chose to make her an alien in the film because he wanted Peter Quill to be the only one main character to come from Earth.
James Gunn revealed that he and producer Kevin Feige wanted David Bowie to appear in a cameo before his death on January 10, 2016.
Vin Diesel was able to pull off Baby Groot's high-pitched voice on his own. His performance required no digital alterations of any kind.
Prop Master Russell Bobbitt created a 1:1 scale model of the 10" (25cm) Baby Groot for filming to use as a lighting reference, and sometimes puppeteered against the cast members during filming.
The sensor that Peter Quill looks at when detecting the extra-dimensional creature is a modified 1977 Mattel handheld "Electronic Football" game. Selling over one million units, this was one of the hottest items of Christmas 1977. The beep at the beginning was the "touchdown" sound; the other beeps were the sound of the ball moving down the field.
The stinkbug that gets eaten in the film was actually made of chocolate and black honey.
In an interview, Karen Gillan explained that Nebula "is a pretty angry woman, with some daddy issues and that, in the second movie, we're going to start to see how much pain her father actually caused her, and we're going to delve right into the relationship with her sister Gamora. I think we might even feel a tinge of sympathy towards her this time."
In the Marvel Cinematic Universe timeline the film takes place in 2014, three months after Guardians of the Galaxy (2014). It takes place a year after Thor: The Dark World (2013), before or after Captain America: The Winter Soldier (2014), and a year before Avengers: Age of Ultron (2015). Ego arrived on Earth and began his relationship with Meredith Quill in 1980, which took place 38 years after Captain America: The First Avenger (2011) and 32 years before The Avengers (2012).
Karen Gillan's make-up took 2-1/2 hours to apply, down from five hours for the first film.
The idea of self-contained minds spontaneously appearing into existence is called "Boltzmann brains." This is a metaphysical conundrum raised by quantum mechanics, and concludes that in a universe that exists forever, you are more likely to be a "Bolzmann brain" hallucinating reality than a real being.
After many rumors, Karen Gillan reprised her role as Nebula without shaving her head.
Chris Pratt said that he thought Michael Rooker has the best shirtless scene in the film. He said Rooker's shirtless scene is about showing vulnerability and developing Yondu's character. You learn something about him in the moment, but his own scene was just to show off his body, and didn't really add anything to Peter Quill.
Vin Diesel recorded Groot's voice for 16 foreign-language releases of the film, up from six in the first film.
Chris Pratt said that he found the workout regimen for his shirtless scene much easier than the one in the first film, because he was already in great shape going into the film. For Guardians of the Galaxy (2014) Pratt was 60 pounds overweight when he started working out. For this film, however, he said he had maintained the buff physique acquired from the first film.
James Gunn previously said that Stan Lee's cameo in this film is one of the four cameos Lee filmed in one day. In addition to this film, Gunn directed two other cameos, one being Doctor Strange (2016) and another one he did not specify.
This sequel was announced a week before the release of Guardians of the Galaxy (2014) at San Diego Comic-Con 2014.
In September 2015 James Gunn said in a Facebook post that he wanted to use the Sneepers, an alien race that first appeared in Marvel Comics in 1964, as background characters in the film, but he was advised against it by Marvel's legal department because the name was too similar to "snípur", the Icelandic word for "clitoris". The Marvel legal department later cleared the use of Sneepers in the film, in part because of the extensive media coverage Gunn's initial post received.
Gary Oldman, Viggo Mortensen, Christoph Waltz, Christopher Plummer, Max von Sydow, Alec Baldwin, Ron Perlman, Stephen Lang, Arnold Schwarzenegger, Bruce Willis, Robert De Niro, Michael Biehn, Mel Gibson and Liam Neeson were considered for the role of Ego.
This is the first feature film shot with Red Digital Cinema's Weapon Dragon 8K digital camera. The camera uses a VistaVision-sized digital sensor based on the 35mm format developed in the 1950s that ran film horizontally rather than vertically for a larger negative.
Laura Haddock (Meredith Quill, Peter Quill's mother) also appeared in Captain America: The First Avenger (2011) as a fan of Captain America.
In an interview, James Gunn said that most of the questions will be answered in this film that remained unanswered in the first.
James Gunn clearly stated that this sequel would not set up Avengers: Infinity War (2018).
To make the Ravagers' belts, Prop Master Russell Bobbitt had his team cut the leather themselves, rather than buying existing belts, and then parts from different electronic devices such as radios and cell phones were glued together to make each belt "a unique piece of art".
James Gunn said in an Instagram post in August 2017 that Farscape (1999) was one of his all-time favorite sci-fi shows. When he ran into the show's star, Ben Browder, a couple of years ago at the Saturn Awards, he asked him if he'd make a cameo. He thankfully agreed and can be seen as the Sovereign admiral with Ayesha.
James Gunn went on record in an interview that he wants to give Nebula her own spin-off movie.
James Gunn cast Michelle Yeoh as a tribute to 1990s Hong Kong films, of which he is a fan.
Matthew McConaughey was considered to play Ego, but passed on the role in favor of The Dark Tower (2017).
According to James Gunn, he wanted John C. Reilly to reprise his role as Nova Corpsman Dey, but scheduling conflicts prevented it.
In the comics, Mantis is half-German and half-Vietnamese. She is portrayed in the film by Pom Klementieff, who has a South Korean mother and a French-Russian father.
Marvel Studios made a statement regarding the future of the "Guardians" franchise, which said Avengers: Infinity War (2018) will take place four years after this film, which in turn takes place in 2014, three months after Guardians of the Galaxy (2014).
This film is part of Chapter Three of Phase Three in the Marvel Cinematic Universe.
Olivia Jackson, the stunt woman for Nebula on the first movie, suffered traumatic brain injury and a left arm injury that led to amputation, as well as multiple fractures to the left side of her face, which required reconstructive surgery. These injuries occurred when she struck a misplaced camera crane while performing a motorcycle stunt during filming for Resident Evil: The Final Chapter (2016). Coincidentally, Nebula (in this movie and in Vol. 1) has a prosthetic left arm and reconstructed left side of her face.
On March 23, 2016, Chris Pratt announced a fundraiser to help support the Lake Stevens' Boys and Girls Club in his hometown. By donating you would get a chance to visit Pratt and eat lunch with him on the set of this film.
Benicio Del Toro, who portrayed the Collector in the first Guardians of the Galaxy (2014), expressed interest in portraying the character again despite Marvel not contacting him about the sequel.
When the character of Ayesha was first introduced in the comics, she was just named "Her" (since she was created as a counterpart to the character Adam Warlock, originally named "Him"). She then took on the name "Kismet" and was renamed yet again as "Ayesha." In "Fantastic Four" #11 (by Chris Claremont, Salvador Larroca and Art Thibert) the Four ask her for her name, and she replies, "I have had many, but the most appropriate is Ayesha: She--who must be obeyed!" Both the name "Ayesha" and the sobriquet "She who must be obeyed" are references to the 1887 adventure novel "She: A History of Adventure" by H. Rider Haggard. The main character of the story was also a priestess named Ayesha (referred to throughout as "She-who-must-be-obeyed"). The elaborate Art Deco-style costume and production design for this movie's Ayesha is also a nod to the most famous movie adaptation of Haggard's novel, She (1935).
Baby Groot is actually the offspring of Groot, not the same character, as confirmed by James Gunn on Twitter on 28 February 2018 where he posted: "First Groot is dead. Baby Groot is his son."
Glenn Close filmed scenes of Nova Prime Irani Rael, but they were cut due to time constraints.
The car Ego is driving with Meredith Quill at the beginning of the film, a 1979 Ford Mustang II King Cobra, is painted in metallic teal-blue and orange, the same colors as his son Peter "Star-Lord" Quill's "Milano" M-Ship.
The edible yarrow root was designed to resemble enlarged pollen grains, and was made of non-dairy white chocolate.
In the comics Peter Quill's father is J'Son of Spartax, of the alien Spartoi Empire. In this film it is Ego the Living Planet, a completely unrelated character. However, in the comics Ego has had the ability to sire a sibling, Alter-Ego.
The license plate on Ego's Ford Mustang Cobra is the same as on James Gunn's hig- school car.
The ironic thing about Gamora not enjoying dancing is Zoe Saldana actually has a thorough background in dancing, with ballet being her first passion.
The film's subtitle is a nod to Star-Lord's Awesome Mixtape Vol. 1 tape from Guardians of the Galaxy (2014).
James Gunn Sr. and Leota Gunn, parents of James Gunn and Sean Gunn (Kraglin), have small parts in the film.
James Gunn noted that many of the crew from the first film, such as cinematographer Ben Davis and production designer Charles Wood, signed on to work on Doctor Strange (2016). However, due to a late change in production schedule to a November 2015 start, they were unable to work on this film.
This film takes place three months after the first, placing the events in 2014. Stan Lee's cameo refers to him being a postman, a potential reference to his cameo in Captain America: Civil War (2016). The events in that film, however, take place in 2016. Alternatively, this may be a reference to his cameo in Fantastic Four (2005), where he played the Baxter Building's mailman, Willie Lumpkin.
The VFXperts used a clip of James Gunn dancing for reference during Baby Groot's opening dance sequence.
This film marks the fifth collaboration between James Gunn and Michael Rooker. The other four were Slither (2006), Super (2010), Guardians of the Galaxy (2014), and The Belko Experiment (2016), which Gunn wrote.
This is Michael Rosenbaum's first foray as a Marvel Comics character. He previously played several live-action and animated DC Comics characters, including Lex Luthor on the television series Smallville (2001), as well as Wally West/The Flash in several animated television shows and movies.
It has been rumored Guardians of the Galaxy Vol. 3 (2020) will be the last to feature Peter Quill, Gamora, Drax the Destroyer, Rocket Raccoon and Groot and that "Guardians of the Galaxy: Vol. 4" will focus on the next generation of Guardians of the Galaxy.
Although he is small, "Groot" is Dutch for "Big". So in essence he is saying "I am Big".
First Marvel Cinematic Universe sequel to use a number, rather than a subtitle (in this case, Vol. 2) since Iron Man 3 (2013). All other sequels since Iron Man 3 (2013) have used a subtitle, such as Thor: The Dark World (2013), Captain America: The Winter Soldier (2014), Avengers: Age of Ultron (2015), Captain America: Civil War (2016), Thor: Ragnarok (2017) and Avengers: Infinity War (2018). The only other sequel to use a number rather than a subtitle is Iron Man 2 (2010).
The only MCU film to take place during one phase (Phase 2) but be a part of another phase (Phase 3).
Michael Rooker and Sylvester Stallone worked together in Cliffhanger (1993), a movie about a mountain climber rescue team set on a snow covered mountain, where their characters start out with a strained relationship. Coincidentally, in this movie when they meet each other, it is snowing, and they are also on bad terms with each other.
Three actors with ties to the Stargate franchise appear in this movie: Kurt Russell starred in Stargate (1994) as Colonel Jonathan "Jack" O'Neil. Michael Rooker appeared in Stargate SG-1: Enemy Mine (2003) as Colonel Edwards. Ben Browder starred as Lieutenant Colonel Cameron Mitchell in seasons nine and ten of Stargate SG-1 (1997), as well as the films Stargate: The Ark of Truth (2008) and Stargate: Continuum (2008).
Kurt Russell and Michael Rooker's second film together. The first was Tombstone (1993).
After the mid-credits scene with Sylvester Stallone, if you watch the credits closely the words "I am Groot" appear several times throughout until the very end. After it is onscreen for several seconds, the words change into an actual credit.
One of the two back to back honorable mentions of David Hasselhoff's works. In this film his Knight Rider (1982) series is mentioned as an influence to Star Lord as a child. The other film is Baywatch (2017), released in the same month (May 2017). Also he has cameos in both the films.
At the start of the movie Kurt Russell, who was born in 1951, is seen with Laura Haddock. They end up running into the forest where Russell kisses her. Then a card comes up that says "34 years later". That would be exactly how many years older Russell is than Haddock.
Mainframe, the Artificial Intelligence Ravager almost resembles a Cyberman from the science fiction TV series Doctor Who (2005). In Doctor Who, the Cybermen are a race of cyborgs fought by the show's title protagonist The Doctor. Karen Gillan (Nebula) starred in that series as Amy Pond, companion of the Matt Smith version of The Doctor, which she played from 2010 - 2012 and again in 2013.
Sylvester Stallone is the second actor from The Expendables (2010) to appear in the Marvel Cinematic Universe. Mickey Rourke was the first, starring in Iron Man 2 (2010).
Dave Bautista was a villain in the James Bond movie Spectre (2015). In this movie, he plays Drax, which was also the name of the main villain in the Bond movie Moonraker (1979).
Liam Neeson was originally considered for the role of Ego but at the end, Kurt Russell was cast instead.
An uncredited Miley Cyrus provided the voice of Mainframe in the extra scene with The Ravagers. In real life, Miley Cyrus dated Patrick Schwarzenegger, son of bodybuilder, actor and politician Arnold Schwarzenegger. Arnold Schwarzenegger is the former rival and best friend of Sylvester Stallone (Stakar Ogord) and Schwarzenegger starred opposite Stallone in The Expendables (2010) and it's sequel and in Escape Plan (2013). Arnold Schwarzenegger had starred opposite Michael Rooker (Yondu) in the futuristic action thriller The 6th Day (2000).