Sonic Scrapnik Island; Return of Mecha Knuckles

Mecha Knuckles, Sonic Wiki Zone

Mecha Knuckles, Sonic Wiki Zone

Mecha Knuckles, Death Battle Fanon Wiki

Sonic the Hedgehog (IDW) (Comic Book) - TV Tropes

Scrapnik Island Explains what happened to Mecha Sonic after he fell from sky sanctuary. I have to say IDW explaining even little details to better explain sonic lore is amazing. : r/SonicTheHedgehog

IDW and Sonic The Hedgehog™ Celebrate Classic Friends (and Foes) in Up – IDW Publishing

Sonic the Hedgehog Community, OT, There's no end to this franchise!, Page 188

SONIC The HEDGEHOG SPECIAL 1996 #1 Comic Book MECHA MADNESS Bagged Boarded NEW

Sonic the Hedgehog: Scrapnik Island Issue 2