Mecha Sonic and Master Emerald - 3D model by HaughtyGrayAlien

ArtStation - Mecha Sonic (Sonic 3 and Knuckles)

ArtStation - Mecha Sonic (Sonic 3 and Knuckles)

Mecha Sonic MK. 1 (Sonic 2) - 3D model by Spex130 (@spex130) [1431dad]

master emerald 3D Models to Print - yeggi

Mecha Sonic - 3D model by Streak Thunderstorm (@streakthunderstorm) [2fd1b93]

5252 - safe, artist:ebbedrawin, mecha sonic, continue screen, game over, master emerald, pose, robot, super form

Mecha sonic transformation master emerald (Fan Animation)

ArtStation - Mecha Sonic (Sonic 3 and Knuckles)

ArtStation - Sonic Prop Project #3: Chaos Emeralds/Master Emeralds