User blog comment:Xilinoc/Ch. 555 - THE HERO/@comment-9096222-20131102093649/@comment-1268838-20131103002151

Well, since he was attacking the SRDI members, I originally thought he was the mind-control guy. But after we saw the "Geh Geh Geh" guy in Letters, it's kind of clear that it wasn't him.

Unlike with most of the Sternritter, we don't even have his Schrift, so it's hard to make any guesses about his abilities.