Sylvester Stallone's evolution of the iconic Rocky character, from a dark and aggressive persona inspired by "Mean Streets," to a relatable and beloved figure, is explored in the Netflix documentary "Sly." A friend's candid critique led to significant script revisions, ultimately resulting in the $117 million box office success of "Rocky" and the birth of a legendary film franchise. Stallone also shares a harrowing experience with Dolph Lundgren during "Rocky IV," where a fight scene left him in intensive care, reinforcing the resilience and adaptability of the filmmaking process.
