Shivarn'n Halanau

 is a fictional title featured in comic books published by Marvel Comics. It refers to the culture of the alien race known as the Shi'ar. is the title given to the Imperial Consort of the Emperor or Empress. Usually, this title is bestowed only to another Shi'ar. The Earth mutant Charles Xavier was lifebound to the then-Empress, Lilandra Neramani, and was provided with the title. He is the first non-Shi'ar ever afforded this position. Though the title is largely an honorific, it does afford it's holder some degree of power. The may speak on behalf of the Emperor or Empress should they be unavailable. The ruling council of the Shi'ar Empire is bound to honor the instruction of the within reason, but should one provide a just argument, their instruction may be over-ruled.

Charles Xavier once invoked the privilege of to prevent Prime Minister Araki and Admiral Lord Samedar from launching a full-scale invasion on Earth in order to recover Empress Lilandra who had been abducted.