The film features a significant, albeit secondary, portrayal of same-sex romantic interest through Ymir's deep devotion and explicit declaration of intent to marry Historia. This relationship is depicted with dignity, complexity, and agency, serving as a powerful motivator for Ymir's actions. The narrative treats their bond respectfully, affirming the worth of their connection amidst the story's tragic backdrop.

The film features Mikasa Ackerman, who as a child defeats a male kidnapper with a knife. It also shows Annie Leonhart, a skilled martial artist, easily winning hand-to-hand combat against male cadets during training. These instances demonstrate female characters winning direct physical contests against male opponents.

The film leans progressive in its portrayal of family by emphasizing 'chosen family' among comrades as the primary support structure, often replacing lost biological families, and depicting fluid gender roles necessitated by a survival-focused, military society.