Sonic 1 Spritesheet Cartoon Edition: Version 1

Custom / Edited - Sonic the Hedgehog Customs - Sonic (Sonic 1 Beta-Style) - The Spriters Resource

These edited Sonic 1 sprites are amazing!

Accurate Sonic 1/CD Sprites, Sonic 3 AIR Mods Wiki

Sprites and Hoaxes – Shauniversal Studios

The VG Resource - Doing Sonic 1-sized, Sonic 1-visual-styled sheets for other characters than Sonic

ArtStation - Sonic 1 Forever with Cartoony Sprites

Sonic Secrets Group

sonic 1 sprite map body parts - Sketchers United

game still sprites of sonic and tails in sonic the, Stable Diffusion

Custom Sonic Sprites Sheet - Sonic 1 Styled by AsuharaMoon on DeviantArt