>>87178604It is a classical story, but it is told in an original, and most importantly, interesting manner. For example, even if the Scotsman is stereotypical, he has a charm that cannot be matched by any other character. He was good enough to earn him a two parter; that's how likable he was.
You could have anyone try to use the angry scotsman stereotype, but Samurai Jack is the one who pulled it off the best.
Also; Demongo, the Minions of Set, Aku? Really, you call that unoriginal? There are thousands of Ancient Evils, but there's only one Aku. Now, back to SU, Yellow Diamond. We know she´s the big bad who stays in the shadows, hates Earth and demands respect at all times. Wow, so original, I haven´t seen that kind of villain in every story ever!
Also, fusion? That's Dragon Ball.
Alien technology being confused for magic? That's Dragon Ball too. Let´s be honest, Steven Universe borrows from other material quite a bit from other media. Like every story ever.