These characters wear a mantle.

A royal mantle, or more simply a mantle, is a garment normally worn by emperors, kings or queens as a symbol of authority. Many princes also wear such a mantle. Sometimes the mantles are worn only once, but in other instances they may be worn or used on other occasions, such as during the opening of a session of the nation's legislature. Mantles also feature prominently in state portraiture and artwork featuring monarchs and princes.