Has a nice vibe to it. While he doesn't feel like the same character exactly, the vibe (as I mentioned) is similar, as if he was an alternate reality version of the character (which he probably is anyway).
Cool! I like the use of the witch doctor shoulders. I would make a point about X having a different mask, which makes him look less like a Toa/ Matoran-originated-creature, which is what I remember him to be, but It's Thunder's mask, my second favorite HF helmet of all time, and so I won't complain. Are those Shadow's legs I see there though? :P