What man, an expert in the field of gamma radiation, is one of the most educated people in the Marvel universe, with seven Ph.D.s to his name, despite the fact that his alter ego The Hulk is more brawn than brains?

Fact: Robert Downey Jr. was paid less than $500K for his role in 'Iron Man' (2008) while the original Rhodey, Terrence Howard, was paid $3.5M.