Mecha Knuckles, IDW Sonic Hub

For the similar Knuckles Robot, see Metal Knuckles. Mecha Knuckles was a robot doppleganger of Knuckles the Echidna. It was created by Dr. Ivo "Eggman" Robotnik. As a Scrapnik, besides the main body of Mecha Knuckles: he has replacement parts of a Skorp, a spikeball and a Grounder. He has a Shovel Claw for one hand. Fires missiles from his mouth, like his original badnik form. arms can extend far, though not as far as Tangle's tail.

Concept art for mecha knuckles and a another character called sigma for IDW scrapnik islands : r/SonicTheHedgehog

Mecha Sonic IDW Sonic Hub+BreezeWiki

Sonic IDW chapter 5 by AmandaUng1428 on DeviantArt

Sonic the Hedgehog: Scrapnik Island Issue 1

IDW Sonic the Hedgehog Issue 10

The Cooler Knuckles by MunchJrGames on DeviantArt

SUPER SONIC vs HYPER KNUCKLES!

Sonic the Hedgehog: Scrapnik Island

Mecha Sonic Mark II, IDW Sonic Hub

Mecha Sonic Mark II, IDW Sonic Hub

Sonic the Hedgehog: Scrapnik Island Issue 1

IDW Sonic Covers & Previews · IDWSonicNews — Sonic the Hedgehog (IDW) #51 Script: Ian