After Dr. Eggman liberated Chaos from the Black Emerald, he proceeded to attack the Floating Island with a legion of Shadowbots and the Egg Carrier while the Brotherhood of Guardians' defenses were still down due to tampering from Hunter. The Master Emerald was shattered, and pieces of it were used to help sustain Chaos in his weakened state. Eventually however, Knuckles was able to locate and retrieve all of the pieces of the shattered Master Emerald, with the Brotherhood providing a new altar for it to better harness its magical powers. Mammoth Mogul escaped as a result of the Emerald's fragmentation, and though he was in a weakened state, pulled together as much power as he could to strike a lethal blow to the Ancient Walkers. (StH: #79, #80, #81, #84, #162)