The Custodian Guard are the Emperor’s personal bodyguards, created using the same arcane methods that begat the Adeptus Astartes.
Stronger than Space Marines and instilled with unshakable loyalty to the Emperor, the Adeptus Custodes now guard the Imperial Palace, having effectively become a defensive army.
Three hundred Custodians, the Companions, still protect the Emperor as guardians of the Golden Throne.
For millennia, the Adeptus Custodes have formed the unyielding core of the Emperor’s multi-layered defences.
Those Custodian Guard charged with the physical protection of the Master of Mankind spend every waking second devoted to their task, refining their warrior skills and constantly testing and updating their own strategies to ensure the sanctity of the Emperor’s throne.
Their duty is so sacred, their reputation so profound, that even Space Marines and Inquisitors kneel before them.