Sonic Sprite Art by Rhansno on Newgrounds

Custom Classic Sonic Sprite Sheet by Adanishedgehog2011 on DeviantArt

Custom / Edited - Sonic the Hedgehog Customs - Sonic (Sonic 2-Style, Expanded) - The Spriters Resource

Porting Sonic's Sprites from Sonic 3 to Sonic 1

Sonic 2 sprite : r/SonicTheHedgehog

Painting Wall Decoration Sonic Sprite From the Video Game - Hong Kong

Which Sonic Sprite Is Best?

Sonic 1 sprite - Decalques por blue-starbie, Comunidade

Sonic Adventure Sprites

Sonic 3(Sonic 2 style) sprite sheet by souptaels on DeviantArt

User blog:Moon the Hedgehog/Sonic the Hedgehog Sprites, Sonic Wiki Zone