Mecha Sonic sprites by Viteoz on DeviantArt

Contentions in the Mecha-Sphere by warahi on DeviantArt

Good Mecha Sonic Sprite Sheet by Misse-the-cat on DeviantArt

SMS Genesis Mecha Sonic MK II expanded by LANDJAWS42 on DeviantArt

Overlord Mecha Sonic by Socomsoldier3 on DeviantArt

Sonic Realm - Art, videos, guides, polls and more - Game Jolt

Metal Sonic vs Silver Sonic 2

Rayquaza vs Metal Sonic

Sonic Pocket Adventure: Mecha Sonic Sprites by BluerSonic on DeviantArt

Sonic Frost (SAGE Demo)

Mecha Sonic by BeeWinter55 on DeviantArt

Mecha Sonic Sprite by Deadbeat99 on DeviantArt