I'd link to a documentary about shell shock on YouTube but the contents of it probably violate the forum rules. If you wish to find it, you can search for "shell shock" on YouTube. It's a documentary split in four parts, with about 15 minutes per part.
I saw a person with the mecha knight helmet costume this evening. Pretty cool, I thought. Dressing up as Mechas is something I'm sure plenty of people have wanted to before. A notable aspect of the helmet is that it constantly shakes.
My second thought about these helmets were that they reminded me a lot about shell shock, a condition which appeared during the 1st world war among soldiers who frequently were close to explosions. Similarly to the new mecha knights helmets is that those suffering the most severe cases of shell shock were constantly shaking. I'm finding the helmet pretty bothersome to look at. In fact, I'd rather not look at it at all. I suppose I may be overreacting, but I think this is the most disturbing thing I've ever seen in Spiral Knights.
Apocrean grip on a knight wearing splash sarong........ that is disturbing, or perhaps it is just the thoughts that you are thinking when you envision that scene....