Charlize Theron was considered to play Diana Prince’s mother, Queen Hippolyta, in 2017’s Wonder Woman, a role that ultimately went to Connie Nielsen. When The Old Guard actress was initially approached for the DCEU movie, she admitted she thought her friend Patty Jenkins was asking her to play Wonder Woman, and she was quite shocked to learn that was not the case. Even so, Theron said she passed on Hippolyta due to conflicting schedules with another project.
Article source: https://www.cinemablend.com/news/2550371/why-the-old-guards-charlize-theron-has-never-been-in-an-mcu-movie