Regent of Karnia-Ruthenia

The Regent of Karnia-Ruthenia, also know as the Reichsverweser, is a person appointed to govern a state because the monarch is a minor, is absent or is incapacitated to rule. The rule of a regent or regents is called a regency and a council may be formed in accordance as provisioned by the Imperial Constitution of 2017. Regent is sometimes a formal title, and its appointer usually is the head of the Council of Regency, that may be appointed by the sovereign himself or by the Imperial Diet in his or her absence or is incapacity to do it.

History of the position
The only known provision for a Regency or a Council of Regency came from the Ruthenian Constitution of 2015, once the the "Fundamental Laws of the Royal Family of Ruthenia", a law created on 28 May 2015 about the rules that govern the then royal family in matters of eligibility for succession to a throne, membership in the dynasty or entitlement to dynastic rank, titles and styles, do not made provisions for the exercise of a regency.

Functions
After the promulgation of the Imperial Constitution of 2016, the provisions were maintained. Both legal texts predict that when a sovereign under eighteen years old ascends to the Throne, a Regency and a Guardianship are instituted to function until this majority is attained. The Regency and the Guardianship are instituted jointly in one person or separately, in which case one person is entrusted with the Regency and the other with the Guardianship. The appointment of Regent and Guardian, either jointly in one person or separately in two persons, depends on the will and discretion of the reigning Emperor-King who should make this choice, for greater security, in the event of His demise. If no such appointment was made during the lifetime of the Emperor-King, upon His demise, the Regency of the State and the Guardianship of the Emperor-King who is under age, belong to the father and mother; but the step-father and step-mother are included. When there is no father or mother, then the Regency and Guardianship belong to the nearest in succession to the Throne among the underage Emperor-King’s relatives, of both sexes who have reached majority. Lawful reasons barring tenure of the Regency and Guardianship are insanity, even if temporary and the remarriage of widowed persons during tenure of the Regency and Guardianship. A Regent of the State must have a Regency Council; there can be neither a Regent without a Council nor a Council without a Regent. The Council consists of three persons of the first two classes selected by the Regent, who will also appoint others as changes arise. Dynasts of the Imperial and Royal House selected by the Regent, may attend sessions of this Council but not before reaching their majority and are not included in the number of the three persons constituting the Council. The Regency Council deals with all matters without exception, which are subject to the decisions of the Emperor-King Himself and with all matters that are submitted to Him and to His Council; but the Council is not concerned with the Guardianship. The Regent has the decisive vote. The appointment of the Council and the selection of the members thereof are provided for in case of the absence of other directives from the deceased Sovereign, to whom the circumstances and the persons should have been known. The Imperial Constitution of 2017 didn't preview the Regency and the only time that was convoked was on 22 December 2017, following the terms expressed in the previously revoked constitutional texts.