Russo Brothers Say "Avengers: Doomsday" Script Kept Evolving During Filming

Joe and Anthony Russo began shooting "Avengers: Doomsday" before the screenplay was complete, Variety reported. Joe Russo told the Associated Press that he and his brother "always view" the script as a "living" document throughout production. Variety noted the unfinished script did not concern the co-directors as filming proceeded.

With reporting from Variety.