Mumm-Ra arrives at Mount Plun-Darr and battles the Thundercats in an attempt to regain the Sword of Plun-Darr.

Will Friedle
Lion-O (voice)

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Kevin Michael Richardson
Panthro / Ancient Spirits of Evil (voice)

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Robin Atkin Downes
Mumm-Ra / Addicus (voice)

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Dee Bradley Baker
Slithe / Kaynar / Rat (voice)

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Pamela Adlon
Pumyra (voice)

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Cree Summer
Panthera (voice)

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Jason Marsden
Leo (voice)

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