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.

Favorites Gallery for Sexyhedgehog777 -- Fur Affinity [dot] net

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

Artwork Gallery for Kyrogeki -- Fur Affinity [dot] net

Fixed Neo Metal Sonic custom by Angel85 -- Fur Affinity [dot] net

Favorites Gallery for Mephiles37 -- Fur Affinity [dot] net

Neo Metal Sonic by sfmff2 -- Fur Affinity [dot] net

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

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

Fem Neo Metal Sonic Unleashed! by Zildtek -- Fur Affinity [dot] net

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

FanArt::Neo Metal Sonic by sitinuramjah -- Fur Affinity [dot] net

fanart] my darling son who can do no wrong by spadesparkk on DeviantArt

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

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