Metal Sonic sprites by revie03 on Newgrounds

Metal Sonic Over Mecha Sonic [Sonic 3 A.I.R.] [Mods]

Scrapnik Island's Mecha Sonic(MOD AVAIBLE) [Sonic 3 A.I.R.] [Concepts]

Custom / Edited - Sonic the Hedgehog Customs - Mecha Sonic Mk II (Battle-Style) - The Spriters Resource

Pixilart - mecha sonic sprite sheet by Tuxedoedabyss03

Steam Workshop::Smbz Mecha Sonic from 2006-xxxx

Mecha Sonic Sprites PNG Transparent With Clear Background ID 178094

Mechal Sonic Sprites by BluerSonic on DeviantArt

Master Mecha Sonic Mugen Download - Colaboratory

Mecha Sonic Pixel Art by DomiNubgrounds on Newgrounds

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