The "Iron Man 4" movie might never hit the big screens anymore. After the recent issue about Robert Downey Jr. "walking-out" in a radio interview, the actor teased on the idea of the non-existence of "Iron Man 4"

Robert Downey Jr. was practically caught unprepared in a recent interview about his past with Krishan Guru-Murthy in the Howard Stern's satellite radio show. Tony Stark decided to walk out and leave the creepy questions about his dark past unanswered. According to reports, he was actually looking forward in answering questions about the success of the "Avengers: Age of Ultron" movie as well as a few details on the possibility of an "Iron Man 4" movie. He felt that a lot of children will be able to listen to the interview, prompting him to leave rather than answer Murthy's questions.

Meanwhile, RDJ is sending out confusing signals about the "Iron Man 4" movie. He earlier revealed in the 'Ellen' show that the "Iron Man 4" movie is already on the works. Later on, he announces in the 'David Letterman" show that there will be NO 'Iron Man 4." This is definitely confusing fans of the red suited hero.

Speculations of the cancellation of the '"Iron Man 4" movie became stronger after the recent revelations from RDJ. On the good note, something big is on the way for the Marvel hero, but not a standalone movie.  The Iron Man has been constantly rumored to be joining several standalone Marvel movies in cameo roles and support roles.

The "Iron Man 4" movie may not push through but Tony Stark is believed to be joining the Spider-Man standalone movie, Guardians of the Galaxy, Captain Marvel and Black Panther. The cameo and supporting roles are of course speculations and no formal announcements of RDJ or Iron Man's participation in the movie are yet to be confirmed.

The possibility of RDJ dropping his role as Iron Man, after the several controversies surrounding him remains as speculation. Meanwhile, his recent controversial interview with the Howard Stern Show has nothing to do with the possible cancellation of the movie "Iron Man 4."