What actor plays Ironman
user
Do you mean: Who plays Iron Man in the movies?  Or do you mean who is Iron Man?  Because I know these things are different.
assistant
Who plays iron man in the movies
user
In the movies?  I think Robert Downey Jr. is Iron Man in the movies.
assistant
What actor plays Ironman
user
Do you mean: Who plays Iron Man in the movies?  Or do you mean who is Iron Man?  Because I know these things are different.
assistant
Who plays iron man in the movies
user
Robert Downey Jr. plays Iron Man in the movies.  But he also plays another Marvel superhero called the Hulk.  
Is that what you were wondering about?
assistant
What actor plays Ironman