O.o uhh when they are gonna realize the only way to kill that thing is by luring him into the quicksand thus making him sink because of its huge massive size... i happen to saw the gameplay on youtube thankfully because i know this monster is introduced on sonic 3 and knuckles in sonic and Tails's storyline before Knux's storyline
Technically this is from Sonic & Knuckles, but it also appears in Sonic 3 & Knuckles since it's a combination of both games. Also, you have to fight it in every storyline, not just in Sonic and Tails' storyline. Trust me. I have every sonic game for the genesis and I finished them all when I was a kid.