Knuckles vs Mecha Sonic MK 2 by GardePickle on DeviantArt

Fanart] Mecha Sonic on Behance

Mecha Sonic Revamp [BETA]

Complete?] Mecha Sonic MK.II-F, Now with 2 × the Strength & Stamina! : r/SonicTheHedgehog

Mecha Sonic Mk.II by Katlike-Moai on Newgrounds

Custom / Edited - Sonic the Hedgehog Customs - Mecha Sonic Mk II

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

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

mecha sonic de sonic 2 o V1 [Sonic 3 A.I.R.] [Mods]

metal sonic and mecha sonic (sonic and 2 more) drawn by 9474s0ul

Metal Sonic has already reached its potential, Mecha Sonic too. Now all that's left is Silver Sonic to shine : r/SonicTheHedgehog