I believe this series has improved your art style a lot. I love the variations of weaponry drawn in this particular page. And man oh man Oblivion is going to need a super morale boost, like Claudio Sanchez descending from the heavens playing Mother Superior on a double necked electric guitar morale boost!
Well he was shown in the anime to control a trainload of humans. I am unsure about freaks. Also, their human comrades, wouldn't be revived, as much as turned into ghouls under Host's control. I would assume they would want to bury their comrades peacefully. I don't think they would have the same problem with several hundred, or even thousands, of Iscariot troops, being turned into mostly mindless ghouls. Also, Iscariot troops are quite used to walking in square formation, behind a wall of shields, shooting, so they wouldn't really be that different or less effective, as ghouls. Thus heaving a 100 Iscariot people behind shields, firing forward, would easily prolong the defence of the castle.
He clearly didn't die in the comic yet, so he's still kicking. As for where he is and what he's doing, your guess is as good as mine. In the early chapters, it's clearly shown that he has been recruited by Oblivion. As of now, it feels to me, like FH simply forgot about him being there