The helm is very stylish, too; I love that shine on the side of its head. That one shine gives its face a more rounded appearance, which makes it look much more like Sonic.
I also like the wheels on its feet. While I worked on this Metal Sonic's previous build, I was thinking about what to add to the sides of its feet. I originally thought of adding spikes, but they didn't look quite right. Wheels work much better for a Metal Sonic build, as they emphasize a Metal Sonic's ability to speedily maneuver around the battlefield. I can't believe that wasn't the first thing I thought of using.
In fact, this looks much more like Sonic than the MK-II did! I always thought the MK-II looked like a blue version of a DBZ character. This, however, looks more like a mechanical-weapon-of-torture version of Sonic, which is just the kind of machine Robotnik himself would want to build. Awesome job, Rave!
Thanks a lot! But hey, it was your colour pallette (awesome colour choices!) and your iniciative. If it wasn't for that edit you made I would never finish the MK-III (because I tryied to do a custom Mecha Sonic but hell, it always didn't come up well...) Also, the MK-I had wheels, but you could only see them in his dashing attack, so I thought I should bring that to the new design. Also LOL I also thought of MK-II like that. Maybe it's because of its humanoid shape and its long spikes, which reminds a lot of Super Saiyan 3 form.
Also, Metal Sonic Kai is awesome, way better than that pile of crap Metal Overlord. But its design is just too different to incarnate into a Mecha Sonic, IMO. Its distorted and creepy face is perfectly suitable for a final boss, but not for a mid-boss like Mecha Sonic.