Pixilart - Custom Sonic Sprite by rym9

Sonic, Sprite Chronicles Wiki

Sonic 3 Custom Sprites by facundogomez on DeviantArt

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

Sonic 3 Sprite Redraw by Genowhirl910 -- Fur Affinity [dot] net

Custom Classic Sonic Sprite Sheet by Adanishedgehog2011 on DeviantArt

Dorkly sonic sprite rigged Blank Template - Imgflip

Sonic Sprite Discussion Thread

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

Sonic 2 sprite edit + Sonic 3D on Sonic 2 pallete by DanielNeris on DeviantArt

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