Art by Philip Chapman
Rock'n is a Badnik that could once be found in the Sandopolis Zone. The robot disguises itself as a boulder, tricking people into jumping on it. When approached, Rock'n stands up, revealing that the "boulder" is just an efficient shield. Although it has no weapons, Rock'n can use its strength to push heroes into traps. The only way to defeat one is by attacking its underside.
Although Rock'n has never appeared in a Sonic the Comic strip, it featured in a Sonic the Comic Online pin-up alongside fellow debutant Skorp.