In Sonic 3, I was playing with the debug mode on the first level, act one; and I came across this weird object that looked like a red sphere. I "copied" that red sphere and it made a bunch of red sphears appeare on the screen. What are these, and what do they do? PS I sent sega a photo of this once...they never replied to me.
It's probably just something from another level that ended up on the pallet. It could also have been an extra object that was taken out or just a common glitch.