S1E21
Birth of the Blades
ThunderCats
calendar_todayMay 12, 2012
schedule22 min
Mumm-Ra arrives at Mount Plun-Darr and battles the Thundercats in an attempt to regain the Sword of Plun-Darr.
broadcast_on_home Networks
Cartoon Network
star Guest Stars
Will Friedle
Lion-O (voice)
Kevin Michael Richardson
Panthro / Ancient Spirits of Evil (voice)
Robin Atkin Downes
Mumm-Ra / Addicus (voice)
Dee Bradley Baker
Slithe / Kaynar / Rat (voice)
Pamela Adlon
Pumyra (voice)
Cree Summer
Panthera (voice)
Jason Marsden
Leo (voice)