The Gaplan monarchy stands as an important constitutional institution. It is ceremonial in function, holding no formal power to govern, yet deeply significant, preserving the culture, history, and enduring traditions of the Federated States of Gapla. It also serves as a notable source of national funding. The current sovereign is His Royal Majesty Wyatt, Prince of the Danubias, who first ascended the throne on the 28 February 2019, and once more on 20 August 2020, following a brief intermission in service.

The monarchy is embodied by a single sovereign, titled the Prince or Princess of the Danubias, also styled as the Sovereign Prince or Princess of Gapla, who concurrently bears the title of Prince or Princess of Gaplastovia and is the constitutional Head of State. Should the reigning monarch become unable to fulfill the duties of the Crown, the established line of succession determines the heir to the throne. To ensure the impartiality of the throne, those holding the offices of President or Deputy President of Gapla are ineligible for the throne.

Within the federation, the states of Gaplastovia and Cristus are each governed by a hereditary monarch of princely rank, distinct in title from others of equal standing. Additionally, the three municipalities beyond the state capitals of New Gaplastovia and Cristaria also maintain hereditary princes or princesses.

In a capacity independent of the Royal Peerage Service, which governs the sale of peerages, the Prince of the Danubias retains the privilege to confer peerages in recognition of extraordinary service to state. This power, although rarely exercised in modern times, remains a symbol of royal power. More commonly, citizens are honored through the national system of awards and honors. Titles such as Duke or Duchess have been granted in accordance with historical precedence, while lesser titles have recognized contributions to the state.