Interfectorem Vespa

Interfectorem Vespa blinked for the first time, clearing its birth ichor from its eyes. Now that its mechanical face was gone, it could finally see clearly, see in ways that had previously been forbidden to it. But with this new warp site, it could see new and delicious ways to destroy the enemies of the loving chaos and anarchy for which it longed...

Sordidum Mala

The one known as Sordidum Mala stood before the walls of the imperial palace, its giant eye, where no eye should be (for it was machine not man), weeping for the horrors it had seen. But the malevolent  thing that now resided in it cared not for those horrors because it was interested in one thing -- death. 

From the Far Galactic East they come...

No one is really sure from who these titans were, but as Horus advanced on Terra they came. They came from the far east, where no titan legions were known to be stationed and they bore no recognizable markings. When hailed, only garbled and guttural sounds responded, although, very occasionally, the names Interfectorem Exspiravi and Upsilon Deus could be heard. The armies of Horus did not waste much time attempting to communicate with them; these titans were heavily blessed by the four Powers and their loyalty was not an issue. And slay in the name of Horus, they did...