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"The thing I like about Ant-Man is that it's not like a secret power, there's no supernatural element or it's not a genetic thing. There's no gamma rays. It's just like the suit and the gas, so in that sense, it really appealed to me in terms that we could do something high-concept, really visual, cross-genre, sort of an action and special effects bonanza, but funny as well."
—Edgar Wright, director and co-writer of Ant-Man
In April 2006, Marvel Studios hired Edgar Wright to direct Ant Man as part of the company's first slate of independently produced films, buoyed by a $525 million revolving film-financing facility. Wright also signed to co-write the screenplay, based on a comic book series about an electronics expert who can shrink to the size of an insect and communicate with ants via a telepathic / cybernetic helmet, with his writing partner Joe Cornish and co-produce the film with his Big Talk Productions partner, Nira Park. At the 2006 San Diego Comic-Con International, Wright said he was intrigued by the story's high concept and character. Wright also stressed that the film will not be a spoof but an action-adventure with some comedic elements and would incorporate both the Henry Pym and Scott Lang incarnations of the character.
In February 2007, Wright said that the project was in "a holding pattern" while the script was being revised. He also said that he had been doing research for the film stating, "Obviously I can’t interview anyone that’s got shrinking serum, in terms of who the characters are though – yeah. Nanotechnology and all that". In March 2008, Wright stated that first draft of the script had been completed and was working on the second.
In February 2010, Stan Lee, co-creator of Ant-Man, tweeted that he met with Wright for lunch writing, "To make up for my previous grievous error, here's a little item that may have escaped you. Marvel is prepping a movie starring-- Ant Man!". Lee continued, "I had lunch with the cool, young director Edgar Wright (Shaun of the Dead) and, as you'd imagine, we had fun discussing the tiny hero". Later in the week Edgar Wright told MTV News that there's no timetable for the film,"Because that character isn't one of their biggest properties, it’s not like a tentpole deadline. It’s more like me and Kevin Feige saying, 'Let's make a really good script.' We've always agreed on that — 'Let's make a good script that works, that’s all about a great genre film, and that isn’t necessarily relying on anything else'". At the 2010 San Diego Comic-Con International, Wright said that his Ant-Man script is an origin story and wouldn't fit in the chronology of The Avengers.
In January 2011, Wright stated that he has resumed writing the script for the film following the conclusion of the international promotion for Scott Pilgrim vs. the World. In April 2011, screenwriter Joe Cornish said that he and Wright delivered the second draft of Ant-Man to Marvel. At the 2011 San Diego Comic-Con International, Wright said "Since February, we've done two drafts of the script, and we just handed in a third draft on Monday".
In May 2012, Marvel Studios president Kevin Feige said that the project is "as close as it's ever been" while Wright teased the film by tweeting a pictogram of Ant-Man. In June 2012, Wright spent just under a week shooting footage for a reel that will be used to test out the potential look and tone of his movie, as well as to decide how convincing Ant-man's powers look onscreen. At the 2012 San Diego Comic-Con International, Wright stated that Ant-Man will be happening and screened the test footage to the audience during the Marvel Studios panel.