Teen Sonic in Sonic 1 Sprites by LuisToons12345 on DeviantArt

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

RatherNoiceSprites's Classic Sonic Sprites [Sonic the Hedgehog Forever] [Mods]

ArtStation - Sprite accurate Sonic The Hedgehog (16 bits).

Colors Live - Generations of Sonic Sprites by SuperSonic Fan

Sonic 1 Tails (W.i.P) Pixie Engine - Create!

Sonic 1 Anniversary Edition - Sonic - Sprite Sheet by LuisToons12345 on DeviantArt

Sonic From Sonic 1 Perler Bead Pattern, Bead Sprites

Sonic 1 TTS Prototype sprite recreation by Skele00 on Newgrounds

HEDGESPIN Framework (SAGE '21 Example Demo)

Mobile - Sonic the Hedgehog - Sonic the Hedgehog - The Spriters