This episode had a definite Star Wars quality with the character Grune. Grune and Jaga were once best friends, both were ThunderCats, and they fought side by side against evil. But then Grune changed, he turned away from the ThunderCat ways to evil ways and ended up fighting against Jaga. This is very similar to the relationship between Anakin Skywalker and Obi-Wan Kenobe. Anakin and Obi-Wan were once best friends, both were Jedi, and they fought side by side against evil. But then Anakin changed, he turned away from the Jedi ways to evil ways and ended up fighting against Obi-Wan. Like in both stories, later in life the two ended up facing each other again in a battle though that is where the differences began. Whereas Obi-Wan allowed Anakin to strike him down, Jaga became the victor against Grune. In both cases, they fought with swords.
It was a wonderful episode though for the adult viewer, it leaves you wanting to see more of the interaction between Grune and Jaga. And it was an extremely cool scene when Lion-O was able to give Jaga both his sword and his strength. Overall, one of the show's best episodes. Grune is certainly a much more interesting villain than we've seen so far.