Pixilart - sonic sprites by Charlesmario

Pixilart - Sonic Prime Nine Sprite by TAILS-THE-F0X

Sonic RPG Maker 2000 and 2003 charset sprites 9 by Ocamaru on DeviantArt

Pixilart - Sonic Pushing Sprite by Sonicyx99

Pixilart - Sonic 3 Sprite Maniafied by atobin0002

Pixilart - SONIC SPRITES by UltraLuther

SONIC (from Super Mario Maker) Sprites by The-Pyromaniac on DeviantArt

Sprite - Style Pasteovers of Mario and Sonic 7 by Abbysek on DeviantArt

Pixilart - Sonic EF Boss by Sonicyx99

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

ActClear - Pixilart

Custom / Edited - Sonic the Hedgehog Customs - Sonic (Super Mario Bros. 3-Style) - The Spriters Resource

Pixilart - HYPER SONIC by SuperSonic29

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