This will turn you into Hyper Sonic. At the very start of Angel ... you get reset back to the beginning you should be a glitched sprite of the monitor even if you're not in debug mode.

B:Turn back to normal. C:Place object. Hyper Sonic, Hyper Knuckles or Super Tails Connect your Sonic & Knuckles cartridge to Sonic 3. Activate the level select and debug. When you enter debug mode ...

This code will remain in effect until you turn off the Genesis. Hyper Sonic, Hyper Knuckles or Super Tails Connect your Sonic & Knuckles cartridge to Sonic 3. Activate the level select and debug.