Mecha Sonic (Sonic 2 GG) by MarcosVargas on DeviantArt

ArtStation - Mecha Sonic (Sonic 3 and Knuckles)

Mecha Sonic Revamp [BETA]

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

Mecha Sonic 2.0 by Sonic808 -- Fur Affinity [dot] net

I get confused with their names. : r/SonicTheHedgehog

Mecha Sonic, MUGEN Database

Mecha Sonic (Sonic the Hedgehog 2) (8-bit), Sonic Wiki Zone

Sonic 2 Character Designer Shares Interesting Tidbits About Tails, Super Sonic, Mecha Sonic and More! – Sonic City

sonic the hedgehog and mecha sonic (sonic and 2 more) drawn by banel_springer

AudioReam on X: Mecha Sonic wants to Defeat Sonic to prove that he is Stronger than him! / X