The Narrator in Kengan Ashura functions as an omniscient, disembodied voice that provides exposition and dramatic context throughout the series. No personal background is established for this character, as they exist purely as a narrative device rather than a participant in the story. Their personality is not individually defined, but their delivery is consistently authoritative, intense, and deeply knowledgeable about the world of Kengan matches. Their sole motivation is to inform the audience, offering explanations of fighters' techniques, histories, and the stakes of each confrontation.

Within the story, the Narrator serves a crucial structural role by bridging the gap between the fast-paced combat and the viewer’s understanding. They clarify the rules of the Kengan Association, detail the backgrounds and fighting styles of competitors, and heighten the tension during pivotal moments. This role extends across the entirety of the anime, including the first season, the second season, and the crossover film with Baki. The Narrator does not form relationships with any characters in the narrative, as they remain outside the story’s events.

The character undergoes no development or arc, as their function is static and consistent throughout the series. Their notable ability is an encyclopedic knowledge of the Kengan universe, allowing them to deliver precise technical commentary on martial arts, fighter histories, and tournament mechanics. This omniscient perspective is their defining trait, and it has been noted by viewers as a distinctive and memorable element that contributed significantly to the series' atmosphere.