According to the Visual Effects Artists, Ego's planet comprises a trillion polygons, and is considered to be the biggest visual effect ever made.
Dave Bautista's Drax make-up took only ninety minutes to apply, down from four 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.
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, which they did not, so he eventually created six from scratch.
According to Chris Pratt, the film's script helped him come to terms with the death of his father.
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, a.k.a 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 contains each of Groot's lines in English.
Prop Master Russell Bobbitt created a 1:1 scale model of the ten-inch (twenty-five centimeter) Baby Groot for filming to use as a lighting reference, and sometimes puppeteered against the cast members during filming.
Director James Gunn revealed that he and Producer Kevin Feige wanted David Bowie to appear in a cameo before his death on January 10, 2016.
The stinkbug that gets eaten in the film was actually made of chocolate and black honey.
In the comics, Mantis is 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 of the main characters to come from Earth.
Bradley Cooper recorded his lines for Rocket while wearing a performance capture headpiece in the recording studio, to perfectly synchronize Rocket's voice and facial expressions. This had not been done in the first movie.
After many rumors, Karen Gillan reprised her role as Nebula without shaving her head.
Chris Pratt said that he found the workout regimen for his shirtless scene much easier compared to the first film, because he was already in great shape going into the film. For Guardians of the Galaxy (2014), Pratt was sixty pounds overweight when he started working out. For this film, however, he said he had maintained his buff physique acquired from the first film.
In an interview for the film, 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 thirty-eight years after Captain America: The First Avenger (2011), and thirty-two years before The Avengers (2012).
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.
Elizabeth Debicki was cast as Ayesha because of her six foot three inch (1.91 meters) height. During filming, she wore platform shoes to increase her height to six feet seven inches (2.01 meters).
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 ball moving down the field.
Gary Oldman, Viggo Mortensen, Christoph Waltz, Christopher Plummer, Max von Sydow, and Liam Neeson were considered for the role of Ego.
Vin Diesel recorded Groot's voice for sixteen foreign-language releases of the film, up from six in the first film.
According to James Gunn, Kurt Russell was de-aged for the film's opening flashback (set in the 1980s) by visual effects company Lola VFX, in what was a "long, painstaking process that took many, many months to accomplish." He continued, "I know Lola did Michael Douglas, and I think they did Tony Stark and Steve Rogers as well. They're the best at what they do, and keep getting better."
This sequel was announced a week before the release of Guardians of the Galaxy (2014) at San Diego Comic-Con 2014.
The picture of David Hasselhoff which Peter Quill pulls from his pocket was designed to look as if it had been torn from an 80s-era magazine. There is bold, red text across what would be the center crease of a full magazine. The half we can see appears to read "I'm Mary Poppins, Y'all" as an Easter egg which would only mean something to a person who has already seen the film.
In an interview, James Gunn said that most of the questions will be answered in this film that remained unanswered in the first.
Chris Pratt said that he thought Michael Rooker has the best shirtless scene in the film, because he said Rooker's shirtless scene is actually 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 did not really add anything to Peter Quill.
The teaser poster is a parody of the cover for The Ramones' album Rocket to Russia.
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 entire media coverage Gunn's initial post received.
Chris Sullivan's Taserface make-up took two and a half to three and a half hours to apply.
James Gunn previously said that Stan Lee's cameo in this film is one of the four Lee cameos filmed in one day. In addition to this film, Gunn directed two other cameos, one being Doctor Strange (2016), and another one in which he did not specify.
Karen Gillan's make-up took two and a half hours to apply, down from five hours for the first film.
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.
Olivia Jackson, the stunt woman for Nebula on the first movie, suffered traumatic brain injury, and a left arm injury, which led to an 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.
James Gunn clearly stated that this sequel would not set up Avengers: Infinity War (2018).
Yondu's replacement, larger head-fin brings the character's look closer to his comic counterpart.
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".
Matthew McConaughey was considered to play Ego, but passed on the role in favor of The Dark Tower (2017).
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.
James Gunn went on record in an interview that he wants to give Nebula her own spin-off movie.
According to James Gunn, John C. Reilly could not reprise his role as Corpsman Dey, due to scheduling conflicts.
James Gunn cast Michelle Yeoh in the film as a tribute to 1990s Hong Kong films, of which he is a fan.
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.
Vin Diesel's high pitched voice for Baby Groot was done on his own, his performance required no digital alterations of any kind.
On March 23, 2016, Chris Pratt announced a fundraiser to help support the Lake Stevens' Boys and Girls Club from where he grew up. By donating, you would get a chance to visit Pratt, and eat lunch with him on the set of this film.
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 then 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 1880s adventure novel She: A History of Adventure by H. Rider Haggard. The main character of the story was also a priestess named Ayesha (also 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).
Benicio Del Toro, who portrayed the Collector in the first film, expressed interest in portraying the character again despite Marvel not contacting him about the sequel.
James Gunn said in a Instagram post in August 2017, that Farscape (1999) was one of his all time favorite scifi shows. So 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.
The edible yarrow root was designed to resemble enlarged pollen grains, and was made of non-dairy white chocolate.
The film's subtitle is a nod to Star-Lord's Awesome Mixtape Vol. 1 tape from Guardians of the Galaxy (2014).
The ironic thing about Gamora not enjoying dancing, is Zoe Saldana actually has a deep background in dancing, with Ballet being her first passion.
Kurt Russell has appeared in many Disney films over the past fifty-one years. This will be his first Disney film and superhero film since filming Sky High (2005).
Glenn Close filmed scenes of Nova Prime Irani Rael, but they were cut out of the film for running time purposes.
This film marks the fifth collaboration between James Gunn and Michael Rooker. The other four films were Slither (2006), Super (2010), Guardians of the Galaxy (2014), and The Belko Experiment (2016), which Gunn wrote.
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.
Cast members Kurt Russell and Sylvester Stallone previously worked together in Tango & Cash (1989).
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 "The Flash" in several animated television shows and movies.
This film takes place six months after the first, placing the events in 2014-2015. 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 a mailman.
James Gunn, Sr. and Leota Gunn, parents of James Gunn and Sean Gunn (Kraglin), make cameo appearances in the film.
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).
Jeff Goldblum has a brief cameo as the Grandmaster. Both he and Chris Pratt have appeared in different films from the Jurassic Park franchise. Golblum appeared in Jurassic Park (1993) and The Lost World: Jurassic Park (1997). Pratt starred in Jurassic World (2015). Pratt and Golblum star in Jurassic World: Fallen Kingdom (2018).
Special Effects Artists used a clip of James Gunn dancing for reference during Baby Groot's opening dance sequence.
Vin Diesel and Kurt Russell previously appeared together in Furious 7 (2015) and The Fate of the Furious (2017).
Although he is small, "Groot" is Dutch for "Big". So in essence he is says "I am Big".
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 (1997) season seven, episode seven, "Enemy Mine" 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).
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.
Kurt Russell and Michael Rooker's second film together. The first was Tombstone (1993).
Michael Rosenbaum (Martinex) auditioned to play Star-Lord in the first movie before Chris Pratt was cast.
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).
This film was released the same year as other comic book movies such as Logan (2017), The LEGO Batman Movie (2017), Wonder Woman (2017), Spider-Man: Homecoming (2017), Justice League (2017) and Thor: Ragnarok (2017).
Kurt Russell (Ego) uses the word "fortuitous". His character, Wyatt Earp, in Tombstone (1993), stated he knew what it meant. His character also used "fortuitous" in The Hateful Eight in his opening scene with Samuel L. Jackson.
Alec Baldwin, Ron Perlman, Stephen Lang, Arnold Schwarzenegger, Bruce Willis, Robert De Niro, Michael Biehn, and Mel Gibson were considered for the role of Ego.