File:Metal Sonic's Mach3,0.png - Sonic Retro

Metal Sonic 3.0, Sonic Wiki Zone

Sonic BoomTube

Sonic Mania – Sonic City Sonic the Hedgehog News, Media, & Community

File:Metal Sonic's Mach3,0.png - Sonic Retro

After Making That Previous Metal Sonic - Sonic Metal Sonic 3.0 Transparent PNG - 500x500 - Free Download on NicePNG

Sonic Mania First Impressions : r/Games

SmashBoards has created: Super Smash Bros. Ultimate - Expand-A-Character!, Page 15

How strong is Chaos from Sonic The Hedgehog? He is stated to be planet level or at least multi-continental. - Quora

Metal Sonic 3.0 (2016 Render) by JoeTEStrikesBack on DeviantArt

Sonic BoomTube

Metal Sonic, Sonic Wiki Zone

Metal Sonic 3.0, Sonic Wiki Zone