Sonic 1 Waiting Mania Style Sprites by facundogomez on DeviantArt

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

Genesis / 32X / SCD - Sonic CD - Sonic

The Ultimate Sonic 1 Sheet

Alternate Extra Mode Sprites [Sonic the Hedgehog Forever] [Mods]

Sonic 1/CD Sprites (Expanded) by I-like-Sonic-91 on DeviantArt

The Complete Sonic 1 Sprite Sheet (V1.0) by 123455675 on DeviantArt

FIND ME ON COHOST AND TUMBLR on X: i used existing sprites, both used and unused, from sonic 1, 2, and cd as pose references for all of these! the hurt-from-above sprite

Sonic Secrets Group

HEDGESPIN Framework (SAGE '21 Example Demo)

I'm learning to use the SGDK, I made these edits for Sonic 1 and 2