Jane (Charlotte Gilman) is the protagonist in the story but not only is she the protagonist but she is the antagonist also. Jane is locked in the room with the yellow wall paper all day because her husband, John, says she shouldn't work she should just rest. John is making her do this so he is also a antagonist. Jane is the antagonist because she is against herself, she basically goes insane because she has too much tie on her hands. For example, she sees her own reflection during the daytime and says "I think the women gets out in the daytime"(9). "I can see her out of everyone of my windows"(9). She is really seeing her own reflection in the windows and she s so fast because she turns with her, in the reflection. She is going against herself because her mind is going crazy because she wants the same rights as men but the men will her have them. She and every other women are afraid of sticking up for themselves. John is holding her back from sticking up for women's rights.
http://www.shmoop.com/yellow-wallpaper/protagonist-antagonist.html
Some of the same ideas I came up with are in here.
http://parrishco.com/academic/a-literary-analysis-of-the-yellow-wallpaper/
Some of my ideas I said repeat in this link.
This is Jane seeing her reflection (the women).
Protagonist: the leading character or one of the major characters in a drama, movie, novel, or other fictional text.
Antagonist: a person who is opposed to, struggles against, or competes with another; opponent; adversary.