When Doctor Robotnik absorbed the power of the Chaos Emeralds and became an omnipotent God, he resurrected several villains in an attempt to destroy Sonic. One such villain was Plasma but, despite all of Robotnik's power, the former dictator felt the need to also resurrect Abacus to control Plasma once more. Abacus was killed by his own monster when Sonic knocked Commander Brutus into Plasma, causing a chain reaction that destroyed all the villains.