ThunderCats

S02E19 Day of the Eclipse

With only Lion-O and Snarf at the Lair, Mumm-Ra sees an ideal chance to strike. Ma-Mutt captures Snarf and takes his form, sneaking into Cats Lair to give Lion-O some tainted candy fruit. Lion-O quickly falls ill, realizing too late that the Snarf by his side is actually Ma-Mutt. Mumm-Ra arrives and overpowers Lion-O. Meanwhile, Snarfer's troubling dream of Snarf turning into a dog prompts him, Ben-Gali, and Pumyra to head to Cats Lair, where Mumm-Ra has set a trap. As Ma-Mutt goes after Snarfer, Lion-O recovers and creates a diversion. When he summons the other Thundercats, Snarf, now in Ma-Mutt's form, uses Mumm-Ra's own chant to transform into Snarf-Ra, the everliving. Snarf-Ra rescues Ben-Gali and Pumyra,