Mina was a young girl with light, fair skin. She had a slender figure and was of average height. In addition, Mina had gray eyes and thick black hair that extended past her shoulders. Her hair was parted in the middle and tied in loose pigtails with light-blue hair ties.
On missions, Mina dressed in the standard trainee uniform and wore a white polo shirt underneath her jacket. When off duty, Mina wore a long-sleeved teal blouse and black pants.
Mina was a cheerful girl, seen when she happily took Sasha Blouse up on her offer of meat that would be restored when they retook their land, but she was also rather brave when she went after Eren Yeager even after Thomas Wagner was eaten by an Abnormal Titan.
In her early trainee days, Mina is interrogated by Keith Shadis. She is often within the cabins wearing casual attire and engaging in casual conversation.
In the year 848, two years before graduation, Mina accompanies the other trainees on a wilderness hunt to sustain themselves in times of peace. Along with the other trainees, Mina is pulled into an equipment heist by thieves in the forest and is left behind with the others as Eren helps rescue the kidnapped Krista Lenz. She is seen with Reiner Braun and the others as the thieves are caught and arrested and Krista is safely returned.
Later, she clears out the cannons with her comrades atop Wall Rose. She is one of the trainees who accepts Sasha Blouse's meat despite it being stolen from the Elite supply, and witnesses the sudden return of the Colossus Titan.
When the Colossus Titan appears outside Trost District, she can only watch in horror as the burst of steam from its body knocks the Trainees off the Wall. She is present when Eren Yeager orders them to attack the Colossus Titan. After the breach, she was assigned to the middle guard along with Eren and Armin Arlert, Mylius Zeramuski, Nac Tias, and Thomas Wagner.
They eventually are incorporated into the front guard due to the number of Titans. Eren begins talking about how killing Titans that got in Trost will improve their rank, and she joins him, indicating that she is also signing up for the Survey Corps. Thomas suggests they have a contest on who can kill the most Titans.
Finally, the whole squad advances forward towards the numerous Titans. Surprising the group, an Abnormal Titan lunges at the roof top they were standing on. The group watches in horror as Thomas is swallowed by the Titan. Eren initially attacks the Titan that swallowed Thomas, followed by Armin first and Mina second.After Eren's leg is bitten off suddenly by one of the Titans, she and the other two soldiers attempt to kill the Titan that injured him. However, a group of Titans arrive out of nowhere and one of them kills Nac, catching her off-guard as another Titan grabs her Vertical Maneuvering Equipment's wire, knocking her over to the wall. When she realizes where she is, it is already too late for her to escape; she is grabbed by the Titan and her head is bitten off.
Armin would later report her demise to the remaining members of the 104th Training Corps, saying she died valiantly in the line of duty. Her death would later be avenged by Mikasa Ackerman, who kills the Titan responsible for her death when it attempts to kill Sasha.
- Mina is the only member of Squad 34 not to have her death avenged by Eren Yeager in his Titan form.
- She is shown sitting with Annie Leonhart at the tables in the background of the first few anime episodes. This shows that they may have had some sort of friendship between them, as Annie is asocial and would have likely sat alone otherwise.