Knuckles vs Mecha Sonic MK 2 by GardePickle on DeviantArt

Fanart] Mecha Sonic on Behance

Sonic Vs Mecha Sonic by Deamondante -- Fur Affinity [dot] net

Renato Madboy on Game Jolt: Mecha Sonic in the art style of Sonic Robo Blast 2

3D file Mecha Sonic and Knuckles 🤖・Design to download and 3D print・Cults

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

Mecha Sonic in Sonic 2 [Sonic the Hedgehog 2 (2013)] [Mods]

Mecha Sonic from Sonic 2 MD by MauroFonseca on DeviantArt

Unseen Sonic the Hedgehog 2 Art by Yasushi Yamaguchi Comes To Light - Sonic Retro

Mecha Sonic! - Sonic The Hedgehog Movie

So, what's the deal with Mecha Sonic in terms of the Classic-Modern split? : r/SonicTheHedgehog