Mammoth Mogul was one of the many inhabitants of Dark Mobius, whose was presumably identical to that of his counterpart from Mobius up until the Knuckles of Dark Mobius became Dark Enerjak. As a result of the threat posed by this evil, Mogul was willing to team up with former foe Sonic the Hedgehog in order to assemble the seven Chaos Emeralds in hopes of defeating Enerjak. Sadly, the plan failed, and Mogul's resulting fate was left unknown. (ASUB, SU: #28)