Editing Government in MedHammer 40,000 (section)

====Magisterium Magna: Constantine Valdor====
As Captain-General of the Adeptus Custodes, Constantine Valdor was granted the title Magister Maxima, or ultimate controller by the Emperor himself, well before The Great Treachery. Originally tentative to use his power over the primarchs and all government, that attitude changed following the disaster that unfolded following the treachery. 
<blockquote>
When Magnus heard The Captain General's defense of The Council of Nikea he rose from his seat. "Are you so blind in your obsessive, geneticly programed devotion to father, you are willing to pretend all of this didn't happen, and that what did was just a "small hiccup." Is your conditioning and geneticly addled mind even capable of cogitating that your Master could make a mistake?" 
Without raising his voice, Constantine replied, "I could be convinced that he made at least twenty."
:--Records from the Council of Terra</blockquote>
While the primarchs blamed Lorgar, the council of Nikea and the Imperial Truth, Valdor blamed the disastrous egos of the primarchs, as well as his own negligence. In Valdor's eyes, the inability of the Primarchs to put aside their own vanity for the good of the Imperium nearly cost humanity its future.

Post treachery, Constantine Valdor pushed back against the primarch's efforts to place Sanguinius as head of the imperium, instead using his own well established title to subjugate them to his oversight the imperium. Valdor views his job as a negative role,  keeping all of the different leaders of the Imperium in check, especially the 12 Primadonas. Technically he and every single Custodes outrank the Primarchs, though they almost always use their authority through Valdor. In private amongst his fellow Custodes, he often refers to their Role as Adeptus Nutrices (Bureau of Wetnurses) and himself as Magister Maxima (Head Schoolmaster).

Constantine Valdor, alongside Fulgrim, and Magnus form the Triumveratus Homines Posteri (Triumvirate of The Future of Mankind), who oversee the recovery of The Emperor.