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What happens when a tech genius meets a vigilante hacker? Robert Downey Jr., the Iron Man of Marvel Cinematic Universe, recently visited the set of the critically acclaimed series "Mr. Robot" for season 2. And star Rami Malek couldn't help getting star truck when meeting the 51-year-old actor.

Downey Jr. visited the set as a fan of the show. "We had Robert Downey Jr. come to the set the other day," Malek tells EW. "He loves the show." But Malek didn't miss the chance to ask him a favor that would benefit other fans of the show. "I asked him if he would consider doing anything in season three," Malek says with a laugh. And what was Downey Jr.'s answer? "He didn't rule it out," Malek says.

The Elliot Alderson depicter himself credits Downey Jr. as a role model. "Obviously, I have been so inspired by him. That's just a role model for any actor and to have him come and want to see some of the show and hanging out and talk is just a huge compliment," he gushes.

Downey Jr. previously said in an interview with GQ that he enjoyed watching "House of Cards" and "Mr. Robot". Of the latter, he said, "[It] is probably the best thing that's been on TV or theater for five years."

"Mr. Robot" returns with its second season July 13 on USA Network. Grace Gummer and Craig Robinson are added to the cast, joining returning stars Malek and Christian Slater among others.