Can we just take the show for what it is? Ridiculous premise with good comedy? Besides, this is japanese animation we're talking about here. Bad guys routinely are not bad, but rather misunderstood. Sure he's trying to conquer whatever land they're from, but why? Plus, he's supposed to be some version of Satan right? He's been portrayed as a misunderstood lover of freedom an autonomy. There's nothing wrong with this show.