Pixilart - sonic sprites by Charlesmario

Pixilart - Classic Sonic Glitch Characters by I-like-Sonic-91

Pixilart - Sonic mania by supersonic64

Sonic RPG Maker 2000 and 2003 charset sprites 14 by Ocamaru on DeviantArt

Pixilart - Sonic 3D Blast Idle by Sonic-Style

Well less Mario Sprites From Sonic Sprites by JairoRamirez100 on DeviantArt

Mario (Sonic Mania Style) sprite by Hartflip0218 on DeviantArt

Collabs - Pixel Art Gallery - Pixilart

Sonic ChotGH - Sprite Compilation (part 1) by Liris-san on DeviantArt

Custom / Edited - Sonic the Hedgehog Customs - The Spriters Resource

Sonic.exe Mario Mix (Antreys), Funkipedia Mods Wiki

Pixilart - Sonic 1 run sprite fix by camkachu