The Narrator functions as the consistent narrative voice across the entire Hetalia franchise, appearing in every season, film, OVA, and spin-off. This character delivers exposition, frames historical and comedic events, and bridges transitions between segments.

Throughout Hetalia: Axis Powers, Hetalia: World Series, Hetalia: The Beautiful World, Hetalia: The World Twinkle, and Hetalia: World Stars, the Narrator provides commentary. Specific episodes feature the Narrator explaining historical scenarios through allegory, offering cultural comparisons, introducing holiday-themed segments, and contextualizing character interactions and flashback sequences.

In Hetalia: World Series, the Narrator appears in episodes covering subjects like military rations, historical revolutions, and regional collaborations such as the Nordic nations. The character also narrates anthology-style episodes focused on specific nations or events, including the "Czech and Slovakia" and "Industrial Revolution" story arcs.

The Narrator extends into films like Hetalia: Axis Powers – Paint it, White, contextualizing the alien invasion plot and resolution. In OVAs such as Gakuen Hetalia and specials like Hetalia of the Dead, the Narrator adapts tone to match genres ranging from school comedies to horror parodies.

Within spin-offs and supplementary media, the Narrator introduces micronation-focused segments featuring Liechtenstein and the Hedgehog Country, frames non-canonical scenarios like Nekotalia, and narrates historical deep dives into topics such as Roman emperors or the Tripartite Pact anniversary.

The Narrator occasionally voices background or minor characters, including crowd noises and off-screen commentary during group scenes depicting historical gatherings or international meetings.

No character design, personal backstory, or direct interaction with the personified nations exists for the Narrator. The role remains an external storytelling device without physical embodiment within the series' world.