User blog comment:Zack Tan/Volume 9 Intermission./@comment-70.160.109.135-20150825014122/@comment-26501532-20150826043934

Yes, he also appears in the intermission of volume 7.

He didn't really fight Shalltear in person actually, he just used a remote controlled empty armor to fight her and also caused her to go full equipment mode just by that.