Pixilart - metal sonic sprite sheet *gif form by Tuxedoedabyss03

Sonic Sonic Sprite GIF - Sonic SonicSprite Pixel - Discover

Sonic (Speed Simulator) Idle GIF Anim by ColdFan-Artz on DeviantArt

Pixilart - Standing Sprite for Sonic by Sonicyx99

Custom Sonic Sprite Animation!

Sonic the Hedgehog-The Sprites are Running! on Make a GIF

Pixilart - sonic sprites by Charlesmario

137916 - safe, artist:zkcats, sonic the hedgehog (sonic), hedgehog

Ova Sonic progress thread, Page 12

Sonic SMS Remake: Sonic 1 - v1.0.F

This is how classic sonic should've looked in Sonic Generations (Credits to RafaKnight on Tumblr) : r/SonicTheHedgehog