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Super Mecha Sonic / Super Turbo Mecha Sonic by MechaSonicSuperFan on DeviantArt

Mecha Sonic MK. II -Sonic 3 and Knuckles (by me) by cvgwjames on DeviantArt

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Death Battle - Turbo Mecha Sonic Vs. The Meta by MechaSonicSuperFan on DeviantArt

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Mecha Sonic by stucat on DeviantArt

OC) (BLENDER 2.91) Sonic 3 & Knuckles Mecha Sonic Model (WIP, Currently needs texturing done) : r/SonicTheHedgehog

Death Battle - Mecha Sonic Vs. Cinder Fall by MechaSonicSuperFan on DeviantArt

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Death Battle - Turbo Mecha Sonic Vs. Jenny Wakeman by MechaSonicSuperFan on DeviantArt