The film lacks LGBTQ+ characters or any exploration of non-heteronormative identities. The narrative focuses entirely on biological and social survival within the central group.

Female characters exhibit high agency and utility, notably through Seong-kyeong, who contributes to survival despite her pregnancy. The film avoids traditional gender hierarchies by presenting women as tactically resilient.

The cast is culturally homogeneous, reflecting its South Korean origins. Diversity is expressed through the socioeconomic spectrum of passengers rather than multi-ethnic representation.

The story offers a sharp critique of modern capitalism and the failure of institutional authority. It explores the tension between individualistic greed and the necessity of communal responsibility.

Elderly and child characters highlight the fragility of the social order. While they avoid being used as 'inspiration porn,' their physical vulnerabilities are used to heighten survivalist tension.