Thunder flashed across the black stone shards of the fallen pyramids of Mumm-Ra, the Ever Living, on Third Earth and New Thundera. His evil essence still polluted those very areas…now, and probably forever – even after his banishment from New Thundera and Third Earth by the spirits of evil for his failures of not being able to defeat the ThunderCats goodness. However,In the depth of darkest space, Mumm-Ra had found a place where he could call home and regain his lost powers.

On the lost moon of Plun-Darr, Mumm-Ra found himself a savage place three times larger than any of the other moons that circled New Thundera. Mumm-Ra could sense the dark energies and death that had transpired on this moon – several of the main reasons that knocked it loose from the orbit of the original Thundera a millennium before its destruction. Mumm-Ra knew he needed to lay claim to this evil place so he could regain his lost glory. So, with the last of his dwindling energy, he summoned it up inside of himself and used it to create a crimson pyramid from the blood covered stones that surrounded him. Mumm-Ra incorporated the skeletal remains of the long dead Lunatics and Mutants were integrated into the pyramid's structure to ensnare their wandering spirits so he could grow stronger from their undead evilness.

Mumm-Ra let out an evil laugh as he entered his new home. Upon entering the tomb chamber, a large cauldron sat in the center – as did a new sarcophagus. No longer did the pyramid house the four statues of evil which Mumm-Ra depend on for aid and power. Instead in their place stood four obelisks constructed from the bones of the dead. Mumm-Ra could see the spirits of the slain circle them; he could feel their strength and evil feed his decayed husk more than the spirits he cowered to in the past ever did.

With this newfound power and darkness flowing through his long undead veins Mumm-Ra, the Ever Living, pledged an oath to himself. He would return to Third Earth and New Thundera; he would bring them the chaos they so deserved and with that, prove to the Ancient Spirits he no longer needed them. He would purge the universe of the ThunderCats, as well as those who had banished him to the depths of oblivion. Mumm-Ra raised his decayed hand, causing the cauldron to bubble and turn.

"First, I need new and more…reliable minions to serve me."

Mumm-Ra approached the cauldron, summoning his newfound power, and said:

"Powers of evil and darkness within my decayed soul…embody this cauldron with the power I need to find someone with the darkness and evil I desire. To build me an army that can end the ThunderCats reign of Goodness."

With these words, the cauldron exploded to life as the energies Mumm-Ra gave it searched across the universe and dimensions for such a person. It did not take long before an image appeared to Mumm-Ra of a man sitting in laboratory filling beakers with different fluids. Mumm-Ra could sense the man's evil aura just from the view his cauldron gave him. This only made him want the scientist more, even before he saw the scientist's creations. Mumm-Ra listened and watched as the scientist filled a syringe with some kind of fluid mix.

"Mr. Xanatos may no longer wish to make scientific history with my creations, and Thailog may be gone, but that will not stop Dr. Antoine Sevarius from achieving scientific immortality with his creations."

And with that Mumm-Ra witnessed Sevarius plunge the syringe into the body of an unconscious young boy; this excited the evil mummy as he waited to see what would happen. Mumm-Ra didn't have to wait long before he saw the child's body contort and twist as wings sprouted from the boy's back. The chamber was filled with the child's screams as Mumm-Ra laid witness to the child's metamorphosis from human to winged beast. The images of winged men and women fighting the ThunderCats, in the air and on the ground, filled the brain of Mumm-Ra cackling as the picture faded from his cauldron. Mumm-Ra walked away from the cauldron and towards his sarcophagus. He let out a small creepy laugh as he spoke to himself:

"Once I am fully recharged I will have to arrange a meeting with the good doctor about a cat problem."

With that, Mumm-Ra slid into his sarcophagus and let out one last, long laugh as the lid scraped shut.