Knuckles The Echidna on Game Jolt: Knuckles NPC Sprites - Sonic 3

Sega Genesis / 32X - Sonic the Hedgehog 3 - Sonic the Hedgehog - The Spriters Resource

Sonic 3 AIR Bluckles sprites : r/Sonic3AIR

S1F R3shaded (Mania-Style Sonic 3 Sprites) [Sonic the Hedgehog

Sonic 3 Complete fixed sprites and some extras by Lady-Bluestreak

User blog:Moon the Hedgehog/More sprites!, Sonic Wiki Zone

Colors Live - HD Sonic 3 Sprite thingy by Animagination_Draws

Sonic 3 Rigged and Improved Sprites by JevilTheIrishBoi on DeviantArt

Easier Sprite Editing Template: Deluxe Edition [Sonic 3 A.I.R.] [Mods]

Sonic 3 Running Sprite - Sonic Running Sprite, HD Png Download

Ok this is really common, people say that the sonic 3 Sprite looks weird, and also they prefer the sonic 2 Sprite. Honestly I prefer the sonic 3 Sprite. I don't know