When Paul Rudd told his nine-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."
The Falcon's role in the plot came about after Adam McKay and Paul Rudd went to see "Captain America : Le Soldat de l'hiver (2014)" and fell in love with the character. They casually suggested working him into the plot, and Kevin Feige informed them that it would actually make perfect sense since Falcon was now living at the New Avengers compound as of Avengers : L'Ère d'Ultron (2015).
At first, the film was meant to focus on the original Ant-Man, Hank Pym. However, Pym developed several personalities, one of whom abused his girlfriend, and producers decided he was not family friendly. Instead, the focus shifted to Scott Lang, with Pym as a mentor and supporting character.
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 celebrated his 70th birthday on set. As an homage to his on-screen character and to celebrate the milestone, the crew presented him with a birthday cake decorated in icing with ants crawling over a film reel.
Garrett Morris: as a taxi driver. He was the first person to portray Ant-Man in a 1979 Saturday Night Live (1975) skit called "Superhero Party."