Specifically, Gwyneth Paltrow is set to reprise her longstanding role as Pepper Potts, and Ty Simpkins is rumored to return as Harley Keener (the kid who helped Tony in Iron Man 3) for an appearance, as well.
Of course, Jon Favreau’s Happy Hogan isn’t the only member of the Iron Man corner of the Marvel Cinematic Universe who’s set up to appear in the fourth Avengers movie.
All things considered, it’s becoming increasingly clear that Avengers 4 may have a strong focus on Tony and his supporting cast, so we will have to wait and see what happens.