This was one of the best episodes of the entire series. Although one would have to wonder how in the world the Thundercats didn't figure out who Pumm-Ra (rhymes with Mumm-Ra, get it?) was sooner. The episdode's lesson for the day was that Lion-O was too trusting and accepting of a total stranger, and had to learn that trust is earned slowly.
Some of the best parts of this episdode include seeing the Cats Lair in action for the first time, as well as several appearances by Jaga. But the coolest was seeing Pumm-Ra infiltrate the Thundercats and sabotage the Cats Lair as well as steal the Sword of Omens. Pumm-Ra tried to use the sword to send the Thundercats Ho! signal, but he found out the hard way that the sword will not do evil deeds. Pumm-Ra gets blasted by lightning and Jaga lets him know who's boss when it comes to the Sword of Omens.