Prince is the crown prince of the kingdom of Freeja, a country situated in the Arabian Peninsula whose very existence once came under fatal threat. In gratitude for Libra having saved his nation from this crisis of extinction, he secretly travels to the city of Hellsalem's Lot and invites the organization's members to a formal banquet at Molzzogazza, a restaurant regarded as one of the finest in the city. His arrival carries considerable diplomatic weight, since Libra hopes that a successful dinner will secure a major sponsor for the organization.

In manner, he initially embodies the ideal of a future monarch. He is poised, courteous, and carries himself with a sense of dignity and refined composure befitting his rank, and he treats the evening as a proper state occasion. However, the restaurant's cuisine possesses an overwhelming quality rarely found anywhere else: the dishes are so extraordinarily delicious that they can cause diners to lose their minds, and the prince proves no exception. As the meal's courses and accompanying drinks proceed, his stately facade steadily erodes, and his behavior grows increasingly unhinged, so that the elegant royal gives way to something far more chaotic and comical.

His role in the story is that of the honored guest around whom the banquet revolves, but also that of a figure in danger. During the same evening, a party intent on taking his life closes in on him, so his protection becomes part of the night's stakes. He has no notable supernatural abilities and is not a fighter; his significance rests entirely on his royal status and on the consequences of his visit. His development across the episode traces a descent from polished royal dignity to unguarded human eccentricity, as the power of the food and drink strips away his formal exterior and exposes a far less composed side.