"GIVE ME THE CHAOS EMERALD."
This feels like the best of both worlds here, some more bulkier, Mecha-ish aspects in Metallix's design. I personally would go with the Metal Sonic eyes for Metallix tho.
Before anyone asks I do prefer Mecha Sonic, but that could easily change with future releases in reboot SMBZ.
(wow this is like my longest review ever lol)