they go from being absolute badasses (except Nohara) to being braindead idiots seemingly without any prior training. How to invent conflict in manga 101...
Didn't Skeleboy do the exact same thing with another necron member? You'd think he wouldn't start bringing it up so that his hostages don die off all the time.
I don't think the artist accurately conveys through the art how bad the burns from an acid attack really is when everyone has such a disgusted reaction when he looks fairly normal.