Random Trivia For This Title:
- Originally the film was meant to focus on the original Ant-Man, Hank Pym. However, the filmmakers deemed Pym as having a too family-unfriendly history (Pym developed several split personalities, one of whom abused his girlfriend Janet) and instead decided to focus on Pym's successor Scott Lang, with Pym becoming a mentor and supporting character.
- Patrick Wilson was cast as Paxton. But after the movie was delayed, scheduling conflicts forced Wilson to drop out and Bobby Cannavale took the role.
- Adrien Brody, Joseph Gordon-Levitt, and Ewan McGregor were all in the running for the role of Scott Lang.
- When Paul Rudd told his 9-year-old son he was going to be Ant-Man, his son said, "Wow, I can't wait to see how stupid that'll be."
- Paul Rudd stated in an interview with New York Times columnist [?] Tom Riddle that he purchased a massive ant farm and watched how the ants worked together. He was so inspired by them that he decided to keep the farm after the filming was complete.
- The shrunken down scenes feature a great deal of dust mites, which was a deliberate move by the VFX artists to emphasize an insect's point of view (they see the world in greater detail than a human does).
- Posters for "Pingo Doce," the Brazilian soda company Bruce Banner worked for in The Incredible Hulk, can be seen in the San Francisco scenes.
- The Falcon's role in the plot came about after Adam McKay and Paul Rudd went to see Captain America: The Winter Soldier and fell in love with the character. They casually suggested working him into the plot, and [?] Kevin Feige informed them that it'd actually make perfect sense since Falcon was now living at the New Avengers compound as of Avengers: Age of Ultron.
- For the 1980s flashback scenes, de-aging VFX were used on the 70-year old Michael Douglas and the 57-year-old Martin Donovan to make them appear younger, and aging VFX were combined with the wig and make-up 33-year old Hayley Atwell wore to make her appear older. Michael Douglas joked about his being made younger through CGI, saying he felt like doing a prequel to one of his younger films: "Seeing myself CGI-ed at the beginning of the movie 30 years younger was incredible! I had these little dots all over my face, and I'm looking at it and half way through the scene the picture it just appeared and there I was 30 years ago. Romancing the Stone. I'm thinking I'm all for a prequel!"
- While Edgar Wright was working on the film, he requested that Marvel would refrain from using Ant-Man or Wasp until he had finished the movie, which is why they were absent from The Avengers.
- According to Michael Douglas, the costume for Paul Rudd had to be altered because of his muscles. Rudd had gone on an extensive training and workout regimen in order to build the proper muscle size for a superhero, but Rudd had become so muscular, they had to soften his costume up.
- When the role of Wasp (Hank Pym's lover and wife) was in the script, Rashida Jones and Emma Stone were considered for the part.
- Sean Bean, Pierce Brosnan and Gary Oldman were considered for the role of Hank Pym.
- In an interview at Comic-Con, Peyton Reed said that Marvel originally wanted Steve Buscemi for the role of Hank Pym, but due to a scheduling conflict, they had to go with Michael Douglas, their second choice. Buscemi would later be rumoured to be in the running for the role of Uncle Ben.
- The director of this film, Peyton Reed, was considered to direct Guardians of the Galaxy, another Marvel Studios film, which was later directed by James Gunn. Reed was also attached at one point, to direct Fantastic Four, a film adaptation based on another Marvel property, that was released by 20th Century Fox.
- [?] Jessica Chastain turned down the lead female role of Hope van Dyne due to scheduling conflicts. She had previously bowed out of the role of Maya Hansen in Iron Man 3 for the same reason.
- Adam McKay, [?] Ruben Fleischer, [?] Rawson Marshall Thurber, Nicholas Stoller, [?] Michael Dowse and [?] David Wain were considered to direct the film.