Robert Downey Jr. was in talks to star in another Marvel film before 'Iron Man' and the MCU could've been completely different.
Robert Downey Jr. Talks Walking Away From 'Iron Man'; Convinced He's Going To Be An Oscar Winner One Day – IndieWire
Robert Downey Jr.'s Iron Man Will Not Return, Says Kevin Feige
Did you know Robert Downey Jr. wasn't in any movies before 2008? : r/RedLetterMedia
Robert Downey, Jr. Originally Met With Marvel About Doctor Doom In 'Fantastic Four' Years Before 'Iron Man
Marvel Exec Says Robert Downey Jr. 'No Longer on the Table' Amid Return Speculation
Robert Downey Jr.'s MCU Return Just Got An Exciting Update
robert downey jr iron man: Robert Downey Jr's Iron Man: A surprising MCU comeback in the works? - The Economic Times
Robert Downey Jr. almost played a different Marvel character before Iron Man - AS USA
Robert Downey Jr responds to Iron Man cameo rumours in 'Black Widow
Robert Downey Jr. not return to Marvel Universe
Robert Downey Jr wanted to star in another Marvel film 1
When Tom Cruise Thought Iron Man 'Won't Work' & Hence Rejected It Giving The Opportunity To Robert Downey Jr
Marvel Looks Back at Iron Man—the Movie That Started It All