Debut: January 01, 1985
Ended: January 01, 1988

The inhabitants of the planet Thundera evacuate just before it is destroyed. They were pursued by a band of mutants. All but one of their escape ships was destroyed. Only a small group of Thunderans (Thundercats) remained. With only half engine power, the group, which was led by Jaga, had to set a course for the nearest planet. Jaga commanded their ship while the other 7 were in their stasis tubes. Jaga died on their journey to Third Earth and their ship crashed there. Soon they made friends with various groups in the area and they designed a fortress. Mumm-Ra the centuries-old embodiment of evil, along with the mutants that destroyed the rest of the Thunderans are a constant threat. But Lion-O, the new leader of the Thundercats, with his weapon the Sword of Omens, leads the surviving Thunderans and their new friends on a never-ending crusade again Mumm-Ra and the evil mutants. The task is made more difficult by the fact that, at will, the undead Mumm-Ra can focus external energies and because Mumm-Ra, the Ever-Living, to terrorize and plague the ThunderCats. But they always manage to beat him back down, and Mumm-Ra reverts, weakened and slinking back to his Pyramid. Intro 2 originally preceded the opening titles in the "movie" version of the origin story. It appeared on the original fhe video release as well. The movie, named "Exodus" after the premiere episode, was a truncated version of the first 5 episodes, cutting quite a lot of material out. So the movie still had the same intro, but "Intro 2" was shown right before it. Thanks to sm2000 for the intro 2 information.

Mumm-Ra: "Wherever evil exists, Mumm-Ra lives! Mumm-Ra lives! MUMM-RA LIVES!!"
Added By: agod
Lion-O: "Nosedivers! They just won't quit."
Added By: Bakb35
Lion-O: "In the future, we must hold nothing back from each other if we're going to remain a team, right?"
Added By: Bakb35
Mumm-Ra: "Nothing will stop the vengeful force of Mumm-Ra!"
Lion-O: "Except evil Mumm-Ra, the horror of your own reflection!"
Added By: Bakb35
Lion-O: "Too late, Mumm-Ra!"
Cheetara: "It was a good plan!"
Tygra: "But, you've made a fatal error!"
Panthro: "You underestimated the seventh Thundercat!"
Wilykit: "The bravest of us all!"
Wilykat: "Thundercat Snarf!"
Added By: Bakb35
Lion-O: "Thunder-… Thunder-… Thundercats, Ho-ooo-ooo-oe!"
Mumm-Ra: "Ancient spirits of evil, transform this decayed form to Mumm-Ra, the ever living!"
Panthro: "Let's go, Thundercats!"
Jaga: "The mystic Sword of Omens cannot be used for evil deeds! Attempt it and know the wrath of Jaga!"
Snarf: "Lion-O, what are ya doing?Snarf Snarf"
Lion-O: "Sword of Omens, give me sight beyond sight."
Panthro: "And keep you foot off that blasted Soloflange!"
Lion-O: "Sword of Omens, I command you.... COME TO MY HAND!"
Snarf: "Snarf Snarf -Snarf"
Cheetara: "You're never trapped until you stop trying."
Lion-O: "Thunder! Thunder! Thunder! Thundercats, HO!"
Safari Joe: "Safari Joe has done it again!"
Ro-Bear Bill: "[to Lion-O] You said we were friends. And friends help each other."
Rataro: "The Eye of Thundera is no macth for the rat's eye."
Luna: "That furrball better watch it. That is my great grandmother he is talking about!"
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