Answer:
Movie Chosen: Split
Character: Casey
Explanation:
Personally, I think Casey is a great character to be analyzed. She has been through a lot throughout her life, and we can see her evolution and history throughout the development of the movie.
The interactions with the other characters are carried out with great intelligence and delicacy. For example, she tries to help her friends but from her wisdom, trying to advise them on what to do in relation to their kidnapper. Unfortunately her friends do not follow her advice and have a tragic end.
Casey, however, handles her relationship with her kidnapper as if he were "an animal". Recall that Casey spent her entire childhood hunting in the woods for which she has experience with "the beasts." She knows how to deal with her kidnapper and is smart, allowing her to survive.
In turn, Casey has gone through situations of physical and psychological abuse by her uncle. She can sense that Kevin has been through a similar situation, which gives her an advantage in knowing the things she should and should not do.
In conclusion, Casey's development from a girl who does not try to defend herself from her kidnapper as her friends do, to the revelation of her story and why it was more convenient for her to be quiet to survive, makes her a great character.