The Duffer Brothers say Chief Jim Hopper in “Stranger Things” was not their first casting choice. In comments circulated from an interview with Josh Horowitz for “Happy Sad Confused,” the Duffers discuss how casting shaped the series and indicate that they initially wanted Billy Crudup to play Hopper. Multiple outlets report that the creators frame the outcome as a matter of timing and fit, with one of the Duffers using the phrase “Everything happens for a reason.” David Harbour later plays Hopper, who becomes a central character in Hawkins, Indiana, serving as a key ally to Eleven and playing an important role in the show’s investigation into the Upside Down. The sources agree that Crudup was the original choice, and Harbour was ultimately cast instead, though they do not provide further detail about why the switch occurred in the cited material. Overall, the reports focus on the creators’ retrospective revelation about Hopper’s casting and how it affected the show’s character dynamics.