Watch ThunderCats Season 1 Episode 20 Online with Multi Subtitles - OnionPlay

Watch Watch ThunderCats Season 1 Episode 20 Online with Multi Subtitles - OnionPlay on OnionPlay - Thundercats briefly shows Lion-O how the time capsule they recovered from the prehistoric man works. Curious to learn more, Lion-O activates it during his night watch and gets caught in its projection rays. The rays send him back in time to Thundera, just before the last earthquake that destroyed the planet. Meanwhile, the Mutants have built an evil robot monster that destroys Cats' Lair. Back on Thundera, Lion-O meets his father, Claudus, and saves him from a Mutant attack. As a reward, Claudus gives Lion-O the plans for the robot that attacked the Thundercats in his time.