ArtStation - Neo Metal Sonic - Sonic Heroes

Neo Metal Sonic (2016 Render) by JoeTEStrikesBack on DeviantArt

Steam Workshop::Neo Metal Sonic [Sonic Heroes]

ArtStation - Excellent

ArtStation - Classic / Modern / Boom Sonic models, Rafa Knight

This is one nice drawing of Metal Sonic, Sonic the Hedgehog

ArtStation - Sonic Overhaul

ArtStation - Sonic Overhaul

ArtStation - Metal Overlord, Sonic Heroes (2003)

ArtStation - Knuckles the Echidna

ArtStation - Sonic Concept Art

Metal Sonic Reimagined, Arcadeous Phoenix on ArtStation at artstation.com/artwork/xz22dW

Neo Metal Sonic by SpikeHedgelion8 on DeviantArt

ArtStation - Sonic Overhaul

Neo Metal Sonic - Sonic Heroes by Tigra-The-Fox on DeviantArt

Nikita Kamlenok - Metal Overlord, Sonic Heroes (2003)