Anka is a young woman who has blonde hair, long enough to reach her neck, that is constantly tucked behind her ears. As a soldier, she is seen wearing the usual Garrison uniform.
Not much is known about her personality, however, as a soldier, Anka is shown to express little to no emotion, except for the moment when she learns of the gate breach in Trost District, which leaves her shocked, and when she learns that the plan to seal the gate was a success she shows surprise and relief. She seemingly follows orders without any objections, not questioning Pixis for going with such an uncertain plan as using Eren Yeager in his Titan form to seal the gate. However, she also understands the feelings of other soldiers and stated that there is a limit to how much one can be motivated by fear. At the same time, it was shown that Anka's behavior towards Pixis is not completely formal, as she woke her superior up by slapping him as well as saying that she does not want to be stuck taking care of him.
After Pixis listens to Eren's words and gets him to help with plugging the Wall, Pixis calls for staff officers to formulate a plan, Anka being one of them. While Pixis announces the details of the upcoming plan to other soldiers, Armin Arlert discusses the plan with Anka and Gustav. During the discussion, Anka states that Titans are not the only enemy, correctly deducing the current state of soldiers' mind.
During the operation, Anka watches the progress from top of the Wall with the other soldiers. When Rico Brzenska fires a red smoke signal after Eren loses control, Anka proposes to pull the elite team back, but Pixis refuses, trusting the elite team as they are the only chance for humanity. Once Eren regains control and successfully plugs the Wall, Anka sees the signal and announces it to the rest of the soldiers.
Anka is seen on top of the Wall in Trost District during the supposed breach of Wall Rose. She wakes Pixis up, scolding him for sleeping there and drinking alcohol, and reports that there have been no more Titan sightings. The two are perplexed, given that there should be more Titans if the wall has truly been breached.
Two weeks later, she accompanies her commander when he visits a bed-ridden Erwin to update him on current events. When Pixis's drinking habits are brought up, Pixis laments that Anka has taken away his bottle, joking that she refuses to change his diapers for him. Erwin praises Anka as an excellent aide, while she waits stoically in the corner with her commander's jacket.
At the conclusion of Erwin's trial, Anka arrives in the King's throne room to report the false news of the breach at Wall Rose by the Colossus Titan and the Armored Titan. When the officials present respond by ordering that refugees from Wall Rose be barred from entering Sheena, Anka departs to inform Darius Zackly of their reaction. After Zackly's forces take control of the throne room, Anka reports to them that the interior Military Police have been suppressed.
Anka accompanies Pixis when he visits Yelena in her cell. Yelena admits to meeting with Eren, and after a few questions from Pixis about the specifics of the meeting, Anka begins taking notes of the discussion.
After Eren and numerous other soldiers defect from the military, assassinating Zackly in the process, Anka accompanies Pixis as he attends a meeting with the other military officials to suggest surrendering to the "Yeagerists" for the time being.
While not directly seen in action, it is presumed that Anka possesses enough skill as a soldier to be the escort of Dot Pixis. However, her main focus seems to be strategizing, with Anka's intelligence being high enough to formulate a battle plan while quickly evaluating the situation and predicting further circumstances. A sign of her abilities may be that the original duty of strategizing was entrusted to only her and Gustav implying Pixis trusts her enough to come up with a strategy that saves not only Trost but humanity as well.
- Her first name refers to the name Anna, meaning 'Eagle', which among others is a symbolization of insight, intelligence, and a sharp mind. It should also be noted that "Anna" is a name given to numerous Queens, being an interesting contrast to Gustav's name having a background of Kings.
- The word "Anka," is the Swedish word for 'Duck'.