When Maligna set her sights on invading and strip-mining Earth, she sent her henchmen Scul and Bean and a small army of Malignoids to Earth, where Null, the man who betrayed the human race made arrangements to stop Earth's best defense the Teenage Mutant Ninja Turtles. In South America, Maligna's first attack takes place when an asteroid full of Malignoid larvae crash on a beach, the Malignoids proceed to devour everything in their path, but the insectoid larvae are dispatched by Jagwar, Dreadmon and Ray Fillet, but with the Turtles captured, it was obvious that this was merely an inconvenience for Maligna. Word of the invasion reached Dimension X, where Leatherhead who had joined the Intergalactic Wrestling Federation had heard of his home world's plight and quit the IWF so he could fight for Earth, he was joined by fellow IWF wrestlers Wingnut and Screwloose, and with the help of Cudley the Cowlick made their way to Earth.
Together with the Teenage Mutant Ninja Turtle Raphael, the Mighty Mutanimals fended off Maligna's invasion, and rescued the Ninja Turtles, a new Mutant team of animals was born, one that seemed as tough as their friends the TMNT. Fighting against Null's forces, the Mutanimals soon found themselves pitted against Null's Four Horsemen, Death, Famine, War, and Pestilence, the Horsemen of Null proved too much for the Mutanimals to face alone, and the team once again joined with the Teenage Mutant Ninja Turtles.
Teenage Mutant Ninja Turtles
Future Ninja Turtles
The Gang of Four
The Four Horsemen