Mina is a young girl with short black hair tied in pigtails. She has large black eyes, usually having a big smile on her face in school. Like the other girls in Titan Junior High School, Mina wears a yellow school blazer with a blue bow and a dark blue skirt.
Although she does not show much of her personality during the series, it seems like Mina is a sweet and kind girl towards her friends and classmates, and as such she appears to have quite a lot of friends.
In the election for a new student council president, Mina is present for the candidates' final speeches, and angrily reacts to Rico's presidential plans of forcing all students to clean the school on breaks, after school, and on non-school days.
In the school's 104th festival, Mina helps at Eren's cheeseburgers stand. She, along with Hanna, prep Armin to be their salesperson. She later flees when Titans appear and steal all of the food stands.
When teachers get in the way of Eren trying to head to the Titans' building to retrieve his chee-burgs, Mina, along with her classmates stand up for him and come between them. She later watches Ilse Langnar's broadcast of Eren and the others venturing into the principal's office, and cheers once Eren manages to retrieve a chee-burg.