The original ThunderCats series ran 4 seasons with one animated movie special. The season guide has a list of these episodes.
Story and SettingEdit
ThunderCats follows the adventures a group of cat-like humanoid aliens called Thunderians from the planet of Thundera. The dying planet Thundera is meeting its end, forcing the ThunderCats to flee their homeworld. The fleet is attacked by the Thunderans' enemies, the Mutants of Plun-Darr, who destroy most of the starships fleet, but spare the flagship hoping to capture the legendary mystic Sword of Omens they believe is on board. The sword holds the Eye of Thundera, the source of the ThunderCats' power, which is embedded in the hilt. Though the Mutants damage the flagship, the power of the Eye drives them back. The damage to the ship means the journey to their original destination is not possible, instead having to journey to "Third Earth"; which will take much longer than they had anticipated. The eldest of the ThunderCats, Jaga, volunteers to pilot the ship while the others sleep in capsules; however, he dies of old age in the process, but not before ensuring they will reach their destination safely. The flagship contains the young Lord of the ThunderCats, Lion-O, as well as the ThunderCats Cheetara, Panthro, Tygra, WilyKit and WilyKat, and Snarf.
When the ThunderCats awake from their suspended animation on Third Earth, Lion-O discovers that his suspension capsule has slowed rather than stopped his aging, and he is now a child in the body of an adult. Together, the ThunderCats and the friendly natives of Third Earth construct the "Cat's Lair," their new home and headquarters, but before long, the Mutants have tracked them down to Third Earth. The intrusion of these two alien races upon the world does not go unnoticed, however - the demonic, mummified sorcerer, Mumm-Ra, recruits the Mutants to aid him in his campaign to acquire the Eye of Thundera and destroy the ThunderCats so that his evil might continue to hold sway over Third Earth.
The series continued as the comic book series from Wildstorm.
Released on DVD in 2006 with limited bonus material. Interviews with grown up fans on the first series, then very little until the final six disks. Therein was a complex system of jumping between disks with features turned on for specific scenes for clues. Throughout the process there is a trivia challenge with interviews from Leonard Starr, Peter Newman and Gerrianne Raphael. These are the "Keys" to the final puzzle. To skip them, just enter the code 0314 to view the special tribute to Mumm-Ra and voice actor Earl Hammond