Found this my External Drive days ago...

A long and overdue un-flashed concept for @Xaayer_The_Grey 's GreyKnight, very unfortunate that I couldn't retrieve the flashed ver. and too lazy to re-flash it again.

Yes, it's not a knight or some sort but that's how it is on Xaayer's original design. Minus the added detail and changes to the armor. Enjoy!