Editing Knights-Errant (section)

===3. Janus/Ianius===
Known to us as the first Supreme Grand Master and commander of the 3rd Brotherhood, though his original name and Legion were at first unknown. His one appearance so far in M32 describes him as a warrior saint, a venerable Space Marine of massive psychic potency yet also emanating a sense of holiness one step down from the Emperor Himself. He also has a squint in one eye, possibly due to an old injury.
*The true identity of Janus is '''Revuel Arvida''' of the [[Thousand Sons]], or more precisely the result of an experiment to save him as follows: After arriving on Terra, he was taken by the Sigillite to cure his rampaging flesh-change at [[Jaghatai Khan]]'s insistence, as he had been vital in allowing the White Scars to reach Terra. Malcador secretly planned to make Arvida the host of a shard of [[Magnus the Red]], hoping that it would restore enough of the Primarch for him to sit upon the Golden Throne in the Emperor's place. Instead, he merged with the shard, which held all of Magnus' nobility (either killing off the good part of Magnus which would have prevented him from becoming the complete spiteful asshat he is now... or preserving it so said nobility would not be corrupted as part of the Crimson King). The newly created entity, neither Arvida nor Magnus, called himself '''"Ianius"''' '' henceforth (ironically the name of his Tutelary. Interestingly, he then said that he believed that this had always been his true name),'' which is a variant wording of "Janus" . He also has a mass of scar tissue surrounding one eye, which perfectly matches Janus's description and is the result of him being a merger of the former Thousand Son with the shard of Magnus. Why this quasi-Primarch obviously was not immortal would be an interesting avenue to explore as he is quite clearly dead in the 41st millenium. It is quite obvious that "Ianius" was a flawed creation, with Jaghatai Khan threatening to cut off Malcador's head and mount it on a spike if the Sigillite didn't give him a chance. When they calmed down, Ianius apologized to the Sigillite for not being what he intended, which means he fully understood what his intended role was and what his inability to assume that role meant to Malcador. If you're a fan of the "Arvida being the first [[Blood Ravens|Blood Raven]]" theory, you can thank [[Laurie Goulding]] for deliberately contradicting it and making him the first Supreme Grand Master instead.
*Interestingly, when all the others were given new names seemingly chosen at random from a bag of silver coins to represent the erasure of their former identities, Ianius was allowed to keep his name, which makes some sense considering that Arvida's original identity had already ceased to exist. In the end Malcador took him and other members of the Knights Errant before the Emperor, and shortly afterwards sent them to Titan, stating that Ianius and Ianius alone would determine when they would re-emerge to the materium.