The Thundercats are constantly being attacked by Mumm-Ra,
they think because he wants Lion-O’s Sword of Omens, but it’s really because of
their awful litter box odor. And so, unable to defeat the Thundercats, Mumm-Ra
makes a peace offering in a gift of Fresh Step cat litter. And recognizing that
Mumm-Ra probably has been bothered by their litter box odor all this time,
explaining his hostility, they use the Fresh Step cat litter from then on, and
then the Thundercats and Mumm-Ra become best friends and always hang out
together forever afterwards. And, as a tag, we see Mumm-Ra tell Lion-O in
confidence: “As an undead Egyptian mummy, I’ve always loved cats.
Egyptians mummified them too, you know. But they don’t get litter box odor
because they don’t need to use a litter box.”