<Li> Donald Glover as Aaron Davis: A criminal looking to purchase weapons from Toomes . Davis is the uncle of Miles Morales, a version of Spider - Man, in the comics . Glover voiced Morales in the Ultimate Spider - Man television series, and campaigned to portray Spider - Man in a film in 2010 . Watts was aware of the campaign, and as soon as he was hired he asked Feige about casting Glover . The role was designed as "a surprise treat for fans", with Davis mentioning his nephew to set up Morales potentially appearing in a future MCU film . </Li> <Li> Tyne Daly as Anne Marie Hoag: The head of the U.S. Department of Damage Control . </Li> <Li> Marisa Tomei as May Parker: Peter's aunt . First reports of Tomei's casting caused backlash on social media, with comic book fans opining that the actress was "too young and attractive to portray the character", especially after the character had previously been depicted by older actresses than Tomei . Regarding the casting, Captain America: Civil War co-writer Stephen McFeely said that, for the MCU, they were trying to make Peter "as naturalistic as possible...That's partly why his aunt isn't 80 years old; if she's the sister of his dead mother, why does she have to be two generations ahead?" Carroll added that the creative team was looking for more of a "big sister" or someone closer in age to Peter Parker in the casting process . After researching the character, Tomei did make "a case to age me up, but no they didn't do it". Tomei felt there was a "blank slate" from which she could develop the character, and talked to Watts about May being "a community organizer or invested in the neighborhood" to indicate where Peter's values come from . </Li> <Li> Robert Downey Jr. as Tony Stark / Iron Man: A self - described genius, billionaire, playboy, and philanthropist with electromechanical suits of armor of his own invention, who is Parker's mentor and is the creator of the U.S. Department of Damage Control . Sony Pictures Motion Picture Group chairman Thomas Rothman noted that, beyond the commercial advantage of featuring Downey in the film, the inclusion of Stark was important due to the relationship established between him and Parker in Captain America: Civil War . Watts noted that after Stark's actions in Civil War, introducing Parker to life as an Avenger, there are "a lot of repercussions to that . Is it a first step towards Tony as some sort of mentor figure? Is he comfortable with that?" Co-writer Jonathan Goldstein compared Stark to Ethan Hawke's father character in Boyhood (2014). </Li>

Who plays peter parker's aunt in spider man homecoming