The Toad Empire is an army of toads led by the evil supercomputer AI Komplex. The Toad empire is bent on conquering the Aniverse and enslaving everyone.
Before Komplex took over, the toads were a harmless race with a passion for selling shoddily-made consumer goods at inflated prices. Some time ago, toad technicians developed a supercomputer named Komplex that would run their planet designed to solve gridlock, control interest rates, and basically do all the boring things the toads didn't want to do. However, Komplex turned on the toads and brainwashed them and made them his soldiers.
Komplex sent the toads on a course of military aggression and destroyed anyone or anything that tried to stop him. The Toad Homeworld was made into seven layers of factories, factories, and more factories, turning it into the giant ball of metal it is today.