Voltron Force (2011)

S2E18 Revenge Is Never Sweet

While Prince Adam and Teela work to repair a malfunctioning Attak Trak in the arid desert, Orko accidentally discovers Kothos, a sorcerer cursed into a sand slug by Evil-Lyn in a previous adventure titled "The Witch and the Warrior." Orko manages to restore Kothos to his original form, but his well-intentioned actions backfire. Kothos seizes Adam and Teela, planning to deliver them to Skeletor in exchange for Evil-Lyn, as he seeks vengeance against her for his transformation.