Overview
Mumm-Ra summons Malcar, an ancient alchemist, to return from the dead. The alchemist returns old and weak, as he was when he died. Mumm-Ra takes him to the forest of youth to restore his youth and power. Malcar regains his powers, and uses them against the Thundercats. He transforms all the Thunderillium on the planet into Thundrainium.
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4 - 1Return to Thundera (1) September 04, 1989 -
4 - 2Return to Thundera (2) September 05, 1989 -
4 - 3Return to Thundera (3) September 06, 1989 -
4 - 4Return to Thundera (4) September 07, 1989 -
4 - 5Return to Thundera (5) September 08, 1989 -
4 - 6Leah September 11, 1989 -
4 - 7Frogman September 12, 1989 -
4 - 8The Heritage September 13, 1989 -
4 - 9Screwloose September 14, 1989 -
4 - 10Malcar September 15, 1989 -
4 - 11Helpless Laughter September 18, 1989 -
4 - 12Cracker's Revenge September 19, 1989 -
4 - 13The Mossland Monster September 20, 1989 -
4 - 14Ma-Mutt's Confusion September 21, 1989 -
4 - 15Shadowmaster September 22, 1989 -
4 - 16Swan Song September 25, 1989 -
4 - 17Touch of Amortus September 26, 1989 -
4 - 18The Zaxx Factor September 27, 1989 -
4 - 19Well of Doubt September 28, 1989 -
4 - 20The Book of Omens September 29, 1989