Sonic and Neo Metal by Kyrogeki -- Fur Affinity [dot] net

He has the gold form in the Archie comics. It happens when he uses Chaos Emeralds I think.

Neo Metal Sonic custom figure by HyperShadow92 -- Fur Affinity [dot] net

Fem Neo Metal Sonic by Caelpio -- Fur Affinity [dot] net

Sonic and Neo Metal by Kyrogeki -- Fur Affinity [dot] net

N.E.O.N by ShiningShinko -- Fur Affinity [dot] net

Favorites Gallery for UtlimatelMetalSonicfangirl1993 -- Fur Affinity [dot] net

Neo Metal Sonic Disguise Doodles by CosmicSynthetics -- Fur Affinity [dot] net

Fem Neo Metal Sonic by Caelpio -- Fur Affinity [dot] net

Metal Sonic Kai by BallGuy1 on DeviantArt

Userpage of Kyrogeki -- Fur Affinity [dot] net

Round 2! by Kyrogeki -- Fur Affinity [dot] net

72140 - safe, artist:huper123gui, artist:theenigmamachine, collaboration, metal sonic (sonic), neo metal sonic (sonic), sonic the hedgehog (sonic), fictional species, hedgehog, mammal, robot, sega, sonic heroes, sonic the hedgehog (series), 16:9, 2017, arm