What is the role of donald downey jr in spider man homecoming?

Donald Downey Jr. plays the character Tony Stark, also known as Iron Man, in "Spider‑Man: Homecoming." Stark’s appearance is limited to a brief cameo in the film’s closing scenes. In this sequence, he offers Peter Parker guidance and encouragement, reaffirming the mentor‑student dynamic that defines their relationship. Stark’s presence connects the film to the broader Marvel Cinematic Universe, providing continuity for fans of the franchise.