It seems like he's really dangerous because he combines the two. He embraces tech and magic, so the Thundercats will have to do the same to combat him.
As for the episode: I wasn't too impressed. Panthro wasn't as cool as I was expecting; he was more of a surly jerkwad. I mean, he's basically just met up with some of the last survivors of his entire race after already spending years out in the wilderness. Crack a smile, dude. Also, you'd think one of the others would've mentioned something about how Panthro's not actually dead after all or the fact that they've found a Thundercat who not only doesn't hate technology but actually rocks a tank like it's no big deal. Instead they go back to the usual pattern: spend most of the episode on two or more of the Thundercats b****ing at each other, then resolve their conflict in one convenient event at the end.
I hope Panthro improves in future episodes and actually becomes a mentor figure to Lion-O again, like he sometimes was in the original series.