Mechal Sonic Sprites by BluerSonic on DeviantArt

Metal Sonic sprites by revie03 on Newgrounds

Sonic & Knuckles Sprite Sheets – Sega Genesis - Sonic Galaxy.net

Mecha Sonic in Sonic 3 [Sonic 3 A.I.R.] [Mods]

Mecha Sonic Sprite Sheet by TheKnucklesMainG4 on DeviantArt

Mecha Sonic, Sprite Chronicles Wiki

Mecha Sonic 8Bits Sprite Sheet by BowchersPrincipal on DeviantArt

The Penman on X: And old sprite pic I did back in April. Wanted to continue showing my support @AlvinSmbz's #SMBZ sprite series with the metal menace, Metallix. Major credit to Mark

MechaChars SRB2 Message Board

Mecha Sonic plays Sonic 3 & Knuckles Introduction - Comic Studio

I made the concept art of mecha sonic if it was in sonic 2 : r/SonicEXE