Pyrofletch

Ah, thank you for the quick responses! Both were incredibly informative.

I'd largely agree with you, Akavakaku, with the exception of the texture - based on the image of Vakama, I wouldn't say the flesh would be terribly... Well, fleshy. I'd say it'd be fairly wiry, like muscle, though nowhere near as vulnerable as exposed muscle would be on a human and just as easily inserted in and out of pieces of armor and bearing the same neutral coloration.

In writing for a Bionicle RPG, I found it exceedingly difficult to visually convey what happens as a Toa replaces pieces of their armor. I know that most organisms in the Matoran Universe are biomechanical beings composed of organic protodermis, the only notable exceptions that come to mind being Makuta, but what I've never found clear is just where their 'bio' begins and their 'mechanical' ends. At what point does their 'flesh' become exposed, and is it dangerous when it does? Is it grafted to their armor, even without mutation? What would organic protodermis look like? If anyone has any insight or theories concerning this matter, sharing them would be greatly appreciated.