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Season 03
After venturing into a remote cave on Hook Mountain in search of Thundrillium, the Lunataks and later the Thundercats fall victim to a bizarre entity with the power to expand upon the negative influences in a person's soul.
All Episodes - S02
EPS01
Mumm-Ra is weak and faces the threat of three new Thundercats, so he sends the Mutants to release his old enemies the Lunataks from their imprisonment in order to bolster the forces of darkness.
EPS02
The Mutants succeed in releasing the Lunataks, who immediately begin looting Thundrillium and taking slaves from the local villages, leading to their first run-in with the Thundercats.
EPS05
In searching for the Lunataks flying fortress Sky Tomb, the Thundercats discover that Mumm-Ra is alive again and more powerful than ever before, leading to an epic battle between him and Lion-O.
EPS09
After venturing into a remote cave on Hook Mountain in search of Thundrillium, the Lunataks and later the Thundercats fall victim to a bizarre entity with the power to expand upon the negative influences in a person's soul.
EPS16
Luna discovers that her grandmother's magic belt is in the possession of Mumm-Rana and heads straight for the Pyramid of Light to claim the artifact and greatly increase her own power.
EPS20
Vultureman builds a devastating device called the Thundranium projector which Wilykat and Wilykit manage to ruin. In return, he damages their space boards, putting them in major peril.