Talk:Geist/@comment-27785848-20161029114806/@comment-4010415-20161029202334

Maybe it couldn't. I could be remembering incorrectly, but I think the assistant said that someone specifically put the "possession-type Grimm" in the Giant Armor for whatever reason. Maybe they devised a way to trap it in there.

Or maybe the possession-type Grimm was actually a Schnee summon, hence the Giant Armor's insides glowing white when Weiss defeated it. *Shrug*