Thundercats

All Season 1

Show summary:
Thundera is a world in crisis in a distant galaxy. The planet has become unstable and will collapse soon. The people of Thundera, known as Thundercats, flee the dying planet in their spaceship. During the flight their ship is damaged when they are attacked by evil mutants. The eldest aboard, Jaga, sacrifices himself to ensure that the ship lands safely on Third Earth.
The remaining Thundercats (Panthro, Cheetara, Tygra, Wilykat, Wilykit, Snarf and Lion-O with the help of the magic of the Sword of Omens) form a headquarters at a place they name Cat's Lair. From there, they fight the evil mutants with the goal of saving themselves and restoring peace to Third Earth.
Meanwhile, the mutants have found a powerful new leader, Mumm-Ra, the Ever-Living. This will not be an easy fight.