Zofia was a girl of medium height with a slim build. She had an oval face with a pale complexion, deep-set, monolid blue eyes, a Greek nose, and taupe hair tied into a ponytail with straight bangs hanging over the forehead. She also often held a serious expression on her face. Like her fellow Warrior candidates, Zofia wore the standard Marleyan soldier uniform consisting of a white jacket and pants, supply packs on the hip, suspender straps, a hard hat with a stripe around it, and knee-high black combat boots. As an Eldian, her uniform was different from that of the Marleyans, as her shirt collar had a small badge with the Eldian star instead of a small clip and her hat had a white stripe with the Eldian star on it instead of a pure black stripe. As is law in Marley, Zofia also wore the Eldian armband as all her family and ancestors residing there did as well.
Zofia was not easily startled, showing little reaction to most things and often handling the less desirable situations with sarcasm. While she was not generally fearful or overly friendly, she did care for her comrades as she cleaned the wounds of fellow candidate Falco Grice when he came back injured and delirious from battle.
When her comrade Udo began to panic at the thought of their military failing, Zofia only laughed as he lost his cool and wrapped Falco's bandage too tight. During the discussion of qualifications for the candidacy of the Armored Titan power, Zofia boasted about her superiority in grades against Gabi Braun, showing confidence.
Zofia and her fellow Warrior candidates participate in the Marley Mid-East War. When Falco Grice is brought back to the hiding trench by his brother Colt Grice, Zofia and the other Warrior candidates rush to his aid and begin treating his injuries and bandaging his wounds. She helps treat and bandage a gunshot wound Koslow received before watching with her fellow candidates as Zeke Jaeger and Reiner Braun finish the assault.
After the battle, Zofia and the rest of the candidates are seen in Fort Slava's harbor, watching as Mid-East soldiers are placed on ships to return to their home countries. She is later seen at the party being held in Gabi's honor.
Zofia congratulates Falco after the latter beats Gabi Braun at racing. Later, she watches the preparations for the festival with Gabi and Udo. Gabi chokes Zofia, upset at her for cheering for Falco, and Zofia calls her a devil.
Along with her friends, she works as a waitress at the party for the ambassadors who came to Liberio. The following day, she is seen enjoying the festival with her friends and Reiner Braun, and then joins the other Warriors to attend Willy Tybur's speech. She, along with her fellow Warrior candidates are stunned when Willy reveals the truth about the Great Titan War having been put to an end by the 145th King, Karl Fritz.
When Eren Jaeger suddenly transforms into the Attack Titan behind the stage, and destroys the building he was currently hiding in, debris is hurled into the audience. A boulder smashes into Zofia and crushes her.
- Sketches of Zofia included in the Attack on Titan: Final Manga Exhibition revealed that Zofia was planned to have the full name Zofia Reitsch (ゾフィア・ライチュ Zofia Raichu?).
- Reitsch is the name of the female German aviator and test pilot, Hanna Reitsch.