Trivia: The first MCU movie to feature the word "fuck", when Quill tells Nebula to "open the fucking door", a line that was improvised on-set and kept in because it was so funny. James Gunn anticipated being told to cut it out, but Kevin Feige left it up to Gunn's discretion. Feige said the Russo brothers had a "fuck" in an early cut of Avengers: Endgame, but they "didn't want that to be their legacy, so if you want that to be your legacy, then sure." James Gunn said that just made him even more keen to keep the line in, at which Feige "laughed his ass off."
Trivia: Quill keeps correcting people that "it's not a trap, it's a face off". After defeating the High Evolutionary they do actually take his face off.
Trivia: Administrator Kwol, who gets shot in the leg, is played by Jennifer Holland, who is married to James Gunn.
Trivia: Lylla is voiced by Linda Cardellini, who also plays Hawkeye's wife.
Trivia: Nathan Fillion's third and most significant appearance in a Guardians of the Galaxy film. He voiced a CGI character in the original, and was meant to appear in posters in the background of the sequel, but those scenes didn't make the cut.
Trivia: The film set a world record for the most makeup appliances used on one project, with 23,000 prosthetics applied to more than 1,000 actors.
Trivia: Despite Thor joining the Guardians at the end of Avengers: Endgame, writer James Gunn never planned to include him in this film. Were it not for Thor: Love and Thunder he simply would have been absent without any explanation.
Trivia: The newspaper Jason Quill is reading in the post-credits scene has an article about Kevin Bacon being abducted by aliens, a reference to the Guardians of the Galaxy Holiday Special.
Trivia: Director James Gunn was originally fired from this film after some of his old Twitter posts with offensive jokes resurfaced, even though he had disavowed them before Disney even hired him. Disney eventually rehired him following backlash from fans and numerous individuals involved with the films and the MCU in general. Dave Bautista was so upset over Gunn's firing that he repeatedly goaded Disney into firing him, even going as far as spoiling that he would indeed appear in Avengers: Endgame.
