The Ancient Spirits of Evil resurrected Mumm-Ra and Ma-Mutt, dispatching them to New Thundera while constructing a new pyramid for Mumm-Ra’s power. The Thundercats bid farewell to Third Earth and set course for Thundera itself, leaving Tygr…

Increasingly frequent earthquakes plague Thundera, a consequence of the malfunctioning gyroscope. Simultaneously, Lion-O intercepts a distress call from Thunderian refugees, prompting him to embark on a rescue mission with Cheetara and Snar…

Lion-O, Panthro, and the Thunderkittens piloted the Whisker, a newly developed flying craft, toward the Churning Rocks in response to a distress call from Thunderian refugees. Upon arrival, however, they were swiftly captured by Two-Time, a…

Mumm-Ra dispatched Ma-Mutt, disguised as Mandora, to liberate the Mutants from Captain Bragg’s circus train, subsequently sending Bragg and Crowman spiraling into the vastness of space. The Mutants then received orders from Mumm-Ra to elimi…

Another tremor, triggered by the ruins of Mumm-Ra, devastated the construction site of the new Cats’ Lair. The Thundercats journeyed then to seek out Jaguara and confront their ancient foe. However, Mumm-Ra had erected a force field over th…

The Ancient Spirits of Evil delivered the Mirror Wraith to Mumm-Ra, who cleverly concealed it within a child’s plaything. He then intercepted a Thunderian escape pod containing a young girl. Presenting the toy to her—Leah—he departed withou…

Wily Kit and Kat were hard at work building a well for the New Cat’s Lair on New Thundera. Simultaneously, a distress signal reached the Thundercats – Thunderian refugees attempting to reach their new home. While the Kittens remained behind…

Venturing through New Thundera, the clever Kit and Kat discovered a gleaming Orb of Gold, which they mistakenly believed belonged to their ancestry. Seized by the power radiating from the Golden Sphere of City, the ThunderKittens succumbed …

Jaguara finds herself unable to operate New Thundera’s Gyro alone. Consequently, the Thundercats summon a robotic assistant to aid her in its function. Arriving on New Thundera is Screw Loose, a robot specializing in Gyro maintenance. Howev…

Mumm-Ra called forth Malcar, an alchemist of forgotten ages, compelling him back from death’s embrace. The alchemist returned frail and aged, bearing the very form he had possessed at his passing. Mumm-Ra then led him to the Forest of Youth…

The alignment of Plun-Darr’s moons brought a devastating drought upon Thundera. Panthro and Snarf ventured out in search of water, only to be ambushed by Ezuka, the winged Serpent of Dreary Canal, driven by its own thirst. The attack sent t…

Captain Cracker, accompanied by his mechanical parrot Polly, arrived at Way-Out Back and released the Lunatacs, securing Bragg and Crownan within one of the train’s cages. Their intention was to journey to Third Earth, launching an assault …

Setting off alone for New Thundera to join his fellow Thundercats, Tygra chose a perilous shortcut through a meteor shower. The maneuver proved disastrous; his ship sustained damage, forcing him down in an uncharted region of New Thundera –…

Mumm-Ra has devised a new weapon, the Babylonian Barbarian Boiler, with which he intends to strike at Cat's Lair. Ma-Mutt’s playful antics lead to his banishment from the Pyramid. Later, the Thunderkittens, Snarf, and Snarfer return Ma-Mutt…

From the depths of the Shadow Realm, the Shadowmaster reached out to the Ancient Spirits of Evil, revealing how he had taken Lion-O’s father, Claudus, into his grasp just moments before Thundera's destruction. Then, through a disturbing dre…

An Ecology Inspector, charting his course through the cosmos via the SWAN system—Space Way Airborn Navigations—journeyed to Thundera to assess the newly constructed Cats’ Lair. Upon arrival, however, he found himself ambushed by Two-Time (a…

Mumm-Ra summoned Amortus, a being he had banished to the Land of No Return centuries past, commanding him to destroy Lynx-O. Amortus forced Lynx-O’s craft, the Thunderstrike, to plummet from the sky, then laid a hand upon his face. The touc…

Having broken free from his exile, Vultureman commandeered a bookmobile in his desperate bid for power. Within its shelves, he discovered an ancient disk detailing the history of Third Earth and two formidable adversaries: Mumm-Ra and Zaxx.…

Employing a fresh Tower signal, the Thundercats guided a Thunderian vessel into their midst; it carried Baron Tass and Mr. Grubber, a pair of notoriously cunning Thunderians. Later, Lion-O dispatched Torr, along with Baron Tass and Mr. Grub…

New Thundera is fracturing, and the Thundercats face the daunting task of delivering sacred artifacts to perilous sites – once places of breathtaking beauty. Should Lion-O fail to enter the Book and bestow the Key of Thundera upon its guard…