Classic Sonic by MegaMotion on Newgrounds

I only just realised classic Sonic only has 2 quills on his head

Heese Sonic by BALeFACTOR on Newgrounds

Good ol' Classic Sonic by Gruffdasmuff on Newgrounds

Stylized GM Sonic by ExtraShugNG on Newgrounds

Rouge the bat tears up by MegaMotion on Newgrounds

Classic Sonic Parkour Animation

Classic Sonic's Biggest Fan

Sonic Sez by MegaMotion on Newgrounds

Hotel Sonic by MissPhase on Newgrounds

Sonic Unleashed by MegaMotion on Newgrounds

Classic Sonic Render SatAm Reanimated by MegaMotion on Newgrounds

Modern Sonic Meets Classic Sonic 2022 by IgwanaSuchus on Newgrounds

Sonic the hedgehog by mrbrokenmonkey on Newgrounds

Sonic running by hutor656 on Newgrounds

Super Sonic Flash-Back (Sonic Rebound)