Pixilart - sonic battle sprite work by TyphoonGames

Sonic Battle Sprite Sheets - Game Boy Advance - Sonic Galaxy.net

TyphoonGames's Gallery - Pixilart

Pixilart - sonic sprite by TyphoonGames

Sonic Battle Pixel-Art by flames-hedgehog on DeviantArt

Sprite Sonic: Ready To Fight and Battle by flakus1012sonic on DeviantArt

Sonic Battle Champions is an demo in the works, could use spriters and pixel artist and animators basically it'll be an open source engine like Mugen but it'll be an Battle engine

Sonic Sprite png images

Sonic Battle Sprite Sheets - Game Boy Advance - Sonic Galaxy.net

Sonic.EXE VS Tails Sprite Battle (Halloween Special)

Sonic Battle Sprite Sheets - Game Boy Advance - Sonic Galaxy.net

TyphoonGames's Gallery - Pixilart

Sonic Battle Sprite Sheets - Game Boy Advance - Sonic Galaxy.net

Crazy sonica battle sprite by shadowXcode on DeviantArt

Sonic Battle Adventure (scrapped sprite animation)

8-bit tikal sprites by BaysenAhiru427 on DeviantArt