Kayoz Hamoto is the oldest brother in my reality of TMNT Forever Unchained, And well he doesn't have a shell due to one of Donnie's experiments with chemicals that splashed onto Kayoz' skin and shell, the shell was litterally absorbed into the skin and now Kayoz' skin has a second defense layer of skin which I like to call "Skin Shells" This is the 2009 version of him.