Mutant Space Cabbages

The Mutant Space Cabbages were originally mere crops farmed by the alien cows on the planet Larson. A radiation leak of undetermined origin mutated the cabbages into sentient beings with the power to duplicate the appearance of practically any other living creature. It can be assumed that the cabbages, who have been proven to have a thirst for power, tried and failed to take over Larson and were run off the planet by the cows. They fled to Earth, setting up shop in the town of Twin Beaks. Their invasion plan was simple: Replace every man, woman, and child on Earth with their own and rule the planet. But thanks to the efforts of Darkwing Duck, the mutant cabbages were stopped. They were taken into custody by the alien cows, although at least one of them was kept as a friend by Dr. Reginald Bushroot.