Lion-O:Lion-O, the Lord of the Thudercats, is not as he appears. Although his body is fully developed, his mind is that of a child. With the Sword of Omens and enchanted claw shield at his side Lion-O has powers that rival those of all the Thundercats. With Jaga's guidance, in "spirit" form, Lion-O has learned to trust in the Sword of Omens and the Code that binds all Thunderians.
Panthro: Panthro, the eldest living member of the Thundercats, is a mechanical wizard and engineering genius. His advanced fighting technique, with battle-sticks (which can contain any concoction or weapon he places inside), proves to make him a vital team memeber. His vast mechanical knowledge helped him construct the Thundertank from pieces of their wrecked spacecraft. After creating Cat's Lair with the Robear Berbils help, Panthro was then able to craft many new vehicles in his High-Tec workshop.
Tygra: Without Tygra there would be no Cat's Lair. Under his guidance the Robear Berbils constructed Cat's Lair in only three days. Tygra's flaming/exploding bolo-whip is a formidable weapon. With it Tygra can become invisible to almost any Third Earth being. Tygra's agility and cunning help him in times of battle and make him an invaluable asset to the team.
Cheetara: Cheetara is the fastest of the Thundercats. Her lightning quick speed, though somewhat limited in use, and hand-activated bo-staff make her nearly invincible. Cheetara also has a mysterious "sixth-sense" that provides her with premonitions about the future or an accurate portrayal of the past. Although her use of this special "sixth sense" provides accurate information, it is also very limited.
WillyKit: WilyKit is WilyKat's annoying sister. Although she is WilyKat's twin she often disagrees with her brother. With her "bag of tricks" WilyKit can defend herself by temporarily baffling her aggressor.
WillyKat: WilyKat is the most curious of the twins. He and his sister both are highly agile. Although her is usually left in charge he often leads his sister and himself into serious danger. Don't be fooled, his sister also makes poor decisions as well.
Snarf: Snarf was Lion-O's "nursemaid" on Thundera, and he has a hard time dealing with the fact that Lion-O is no longer in need of his "protection". Although he's somewhat cowardly, Snarf does manage to gather his wits and help when needed.
Jaga: Jaga is the eldest and wisest of the Thundercats. He was once the chief advisor and protector of Lion-O's father, Claudis. After the destruction of Thundera, he gave his life piloting the Thundercats to Third Earth so they could survive in the only remaining suspension chambers. Jaga was once the keeper of the Sword of Omens and now appears to Lion-O from his mystical plane of existence.