Magister

The Magister is the ruling monarch of the Intergalactic Empire. He is elected by the Imperial Senate, and normally serves for life. However, the Senate can vote to remove him, but only in cases of serious crimes or physical or mental incapacity.

Requirements
The ruling Magister must meet two requirements:  he must be of the Shi'ar race and also a member of the Neramani royal family.

Powers of the Magister
The ruler of the Empire has the power to veto legislation passed by the Senate. He also appoints most members of the Senate, but he must consult the Supreme Chancellor, and only the Senate itself can remove it's own members. The Magister can also veto the appointment of a candidate for Chancellor.

Bodyguard
The ruling monarch had his or her own personal bodyguard, the Imperial Royal Guard.