: In a cave with fellow captive Ho Yinsen, Stark builds a crude arc reactor to keep the shrapnel from his heart and constructs the bulky Mark I armor to escape.
: Stark perfects his suit technology while discovering that Stane has been illegally selling weapons to terrorists. The film culminates in a battle between Stark’s sleek Mark III suit and Stane's massive Iron Monger armor. Watch Iron Man (2008) CF
: Marvel initially faced internal opposition to casting Robert Downey Jr. due to his past, but Favreau insisted he was the only actor who could embody Stark’s complex redemption arc. : In a cave with fellow captive Ho
: The introduction of Nick Fury and the "Avengers Initiative" became a signature of the franchise. Watch Iron Man (2008) CF