The Regent of Alderaan represented a specific role within the Alderaanian court system. During the ascent of the Galactic Empire, the Lorrdian entertainer Rewello delivered a performance for someone occupying this position.
The role-playing guide Han Solo and the Corporate Sector Sourcebook, published in 1993, included a reference to a "Regent of Alderaan." Furthermore, The Official Star Wars Fact File, specifically in its 67th edition, indicated that Bail Prestor Organa delegated his responsibilities to a regent to assume the position of senator.