Fan Casting Yo Hinsen in Iron Man (2008)

Professor Ho Yinsen is a fictional character appearing in American comic books published by Marvel Comics. The character is usually depicted as a supporting character of the superhero Iron Man (Tony Stark), and plays a key role in Iron Man's origin story as a mentor and co-builder of his first armor. Shaun Toub portrayed the character in the Marvel Cinematic Universe films Iron Man (2008) and Iron Man 3 (2013).