Sonic the Hedgehog 2 - Sonic Chaos Prototype by PixelMarioXP on DeviantArt

STH2 Mighty the Armadillo by retrobunyip on DeviantArt

Sonic 1 SMS - Amy Rose by PixelMarioXP on DeviantArt

Tails (Sonic 2-Style, Expanded V2) by TheCrushedJoycon on DeviantArt

Diamondman the Hedgehog (Re-Design) Sprites Sheet by

Sonic the Hedgehog Moon by MarioObsessed - Game Jolt

Comparison V.3 by CrazyLifeGamer on DeviantArt

Sonic 3 SMS/GG 3.0 by Antonio1407 on DeviantArt

WIP] Sonic the Hedgehog SA2 Style (Basic moveset) by

The same edited S3 Prototype Sonic and Tails with by Abbysek on

Sonic the Hedgehog Moon by MarioObsessed - Game Jolt

Sonic the Hedgehog - Green Hill Zone by SonicDash57 on DeviantArt