I found some sprites from the lost Sonic 1 beta.

@riyendi

Leak of the Secret Level of Eggman (bossfight with TAILS_2007)

@Qintin

WHOHOOOOOOOO!!!

Who else should I add?

NULL/Filename2, but Baldi's Basics 2D Edition

New Lord X Sprites

@MTMB_Lenovo

@exector269