Steam Workshop::Sonic 3 & Knuckles - Mecha Sonic MK2

Steam Workshop::Sonic The Hedgehog's Gmod Collection

Mecha Sonic in Sonic 3 A.I.R ✪ First Look Gameplay (1080p/60fps)

Steam Workshop::Sonic

Rivals of Aether Workshop: Mecha Sonic (Sonic 3 & Knuckles)

Mecha Sonic in Sonic 2 (2013) ✪ First Look Gameplay (1080p/60fps)

Metal Sonic, Fantendo - Game Ideas & More

Proto:Sonic & Knuckles/Sonic 3C 0408 - The Cutting Room Floor

Sonic Origins, Sonic Wiki Zone

Steam Workshop::[S3&K] Mecha Sonic P.M.

Steam Workshop::Sonic 3 & Knuckles - No Way!

Comics with Mecha Sonic MK II - Comic Studio

Steam Workshop::Sonic Heroes - Knuckles the Echidna

What's your favorite mainline Sonic game of all time and why : r/SonicTheHedgehog