Previously, a shy girl, with low self-esteem and heart problems.
Now, a cold, calculating, almost insensitive, strong and agile girl.
Homura has lived through so many timelines and fought so hard in each of them that her determination and desperation are overwhelming.
Homura will do whatever it takes to prevent Madoka Kaname from making a contract with Kyubey and becoming a magical girl like her, because after so many timelines, she discovered many things behind magical girls.