Metal Sonic by JamesTheReggie on DeviantArt

Neo Metal Sonic by Wyat-ttt on Newgrounds

Character Chronicle: Metal Sonic – Source Gaming

Neo Metal Sonic over Mecha Sonic [Sonic 3 A.I.R.] [Mods]

Sonic Heroes (Video Game 2003) - Ryan Drummond as Sonic the Hedgehog, Metal Sonic - IMDb

Sonic The Hedgehog Metal Sonic 9 Plush : Target

Sonic vs Hyper Metal Sonic, an art print by Yung Firefly - INPRNT

Aesthetic Metal Sonic Diamond Painting

Steam Workshop::Classic Metal Sonic

Metal Sonic MK-EGG - Sonic the Hedgehog Movie by ShadowLifeman on DeviantArt

Hot Take: Metal Sonic (at least regular form) should never ever talk because stuff like this hits way harder than if he just spoke instead : r/SonicTheHedgehog