What I like best about the new Thundercats is that it begins further back in time. Nutshell: A handful of surviving Thundercats (including the heir to the throne) are forced to leave their planet of Thundera, only to be pursued and thwarted by the “villains” of other anthropomorphic animals as well as a mysterious and freaky mummy-like character named Mumm-Ra who wants the “Eye of Thundera” which is embedded in the Hero’s sword.
Another reason the original seemed a bit flat to me is that the “villains” (animal-based humans and Mumm-Ra) seemed arbitrary. They just were there, and hated the Thundercats, wanting that sword’s “eye.” Now there might be something I’m forgetting which helped explain them beyond “bad guys.” But even if it did, it had obviously not been memorable. Here, though, it’s different. We see that Mumm-Ra is an ancient evil once thwarted by the Thundercats and that the Eye belongs to him - once again painting the ‘cats to be not so stellar on their morals. I’ve already mentioned their abuse of the other creatures. There’s more to it than all this, fortunately, but I’m not going to bore you with it.
They’re also so much more cat-like than they were the first time, which only makes sense (and had bothered me before as well.) They’ve taken some liberties, such as making Tigra and Lion-O brothers, changing up relationships and such... but hey, it’s a reboot. It’s not supposed to be exactly the same. So far the changes are welcomed. The character design is such that they’re easily recognizable as their 80’s counterparts but they’re more sleek and tweaked just enough to be “new.” Oh - they also gave the Thundercats - get this - THUNDER & lightning to use! Cool.