Rosa Carlstead

Rosa Carlstead (ローザ・カールステッド) is a recruit of the Survey Corps and the daughter of Sorum Humé and Maria Carlstead. She appears in the light novel Attack on Titan: Before the Fall 3 and the manga series Attack on TItan: Before the Fall.

Appearance
Rosa is a young girl with short black hair; like her mother, she has two strands of hair running along the side of her face. She wears a white button up shirt underneath the traditional uniform of the Training Corps.

Personality
Friendly and brave, Rosa is headstrong and eager to join the Survey Corps like her late father. Much like her mother, Rosa is known to tease and act mischievous around others.

Rebuilding the Survey Corps arc
Rosa is first introduced as a new member of the Training Corps attending the academy within Wall Rose. During a routine training exercise, Rosa and the rest of her squad-mates come across an injured teen washed up along the bank of a river. She took him to a nearby abandoned cottage to heal. Roughly a week later, she goes to check on him and is surprised to see him awake and moving, believing him to be in a coma. As Rosa goes to change the teen's bandages, she introduces herself and is astonished to see his wounds have healed so quickly.

As she mentions one of the wounds looked to have been caused by a sword, the teen starts to panic and asks about a device he was wearing; Rosa shows that it was removed and stored away in a drawer. The teen introduces himself as Kuklo and mentions that the device in question is a tool designed to fight Titans. Amazed, Rosa is further taken back when Kuklo reveals that he knows both her mother as well as the famed hero Jorge Pikale. When asked by Kuklo if she can get in touch with either Jorge or her mother, Rosa agrees to help him.

Later that night, Rosa brings her fellow squad mates to see Kuklo. When one of them questions Kuklo's injuries, Rosa defends him by stating Kuklo's part of a secret group designing an anti-Titan weapon. When she hears that Jorge will be arriving soon (and since Kuklo is friends with him), Rosa asks if he can put in a good word for them; she affirms her desire to join the Corps in order to avenge her father's death. Kuklo agrees to put in a word for them all, but only if they promise to him that they will take the training seriously; Kuklo reveals that he was at the last expedition where many soldiers died, and that some of his scars are from Titan inflicted wounds. Slightly shaken by this, Rosa and the others still agree. As the next two weeks go by, Rosa is amazed by how all of Kuklo's wounds have mostly healed. When she hears Kuklo mention the name Sharle, she teases him by asking if she is his girlfriend. She then gives Kuklo back the iron bamboo knife he had on him; suddenly struck by an idea when hearing it referred to as a protective charm, Rosa takes it and inspects one of the wounds on Kuklo's side. She tells him that due to it placed there, the strike did not go any deeper and it saved Kuklo's life.

Relationships

 * Sorum Humé and Maria Carlstead - Rosa has a loving relationship with both her parents. Rosa held her father in high regards and wished to join the Survey Corps to avenge his death; her mother understandably tries to prevent her from joining the Survey Corps and settle for the safety of the Garrison.
 * Kuklo Munsell - Rosa is curious about Kuklo and is amazed that he knows both her mother and the heads of the Survey Corps. Hearing about his device (and seeing him operate it) only helped drive Rosa to improve herself to be able to join the Survey Corps someday. It is presumed that Rosa has a crush on Kuklo as she teased Kuklo when he mentioned Sharle's name, but was visibly disappointed to see them hugging each other after reuniting.

Trivia

 * The names of Rosa and her mother Maria are most likely based off of the names of the two outermost Walls, Maria and Rose.