adeptus_custodes

The Adeptus Custodes, renowned as the Golden Legion, the Brotherhood of Demigods, the Golden Brotherhood, and a host of other titles (The Custodian Guard, The Guardians, the Emperor’s Saints, the Watchers of The Throne, The Thousand Companions, The Ten Thousand), but most commonly known as Custodians, are the guardians of the Imperial Palace and the Golden Throne, as well as the personal bodyguard to the Emperor. Due to the vast size of the Imperial Palace, the Custodes always act as a defensive army.

Together with the Sisters of Silence, they represented the Talons of the Emperor as the right hand of the Emperor. Custodians are the mightiest of mankind's warriors. They are to the Space Marines what those transhuman warriors are to common Guardsmen, an elevated elite whose raw strength and willpower are wholly insurmountable.