Birth of the BladesBackdropThunderCatsPosterThunderCatsBirth of the BladesSeason 1, Episode 21GalleryMumm-Ra arrives at Mount Plun-Darr and battles the Thundercats in an attempt to regain the Sword of Plun-Darr.CastWill FriedleLion-O (voice)Kevin Michael RichardsonPanthro / Ancient Spirits of Evil (voice)Robin Atkin DownesMumm-Ra / Addicus (voice)
