Theron, 39, expressed her reluctance to return to the franchise during an interview with Entertainment Weekly.
"There were times when I was like, 'George! What are we doing?!' We would show up with no scene numbers, we couldn't even have a call sheet. And you look around and go, 'What is going on?!'" she recalled.
"There's part of me that's like, 'No way will I ever do that (again).