He's the final boss you face in Demon King Castle and the one who actually kidnapped the Princess in the first place. His whole deal is that he's supposedly achieved enough power to permanently separate demons and humans from each other—which sounds pretty major—but honestly, he's way more preoccupied with maintaining the game's internal balance and managing what he calls "flags."
The thing is, the Princess constantly breaks the rules of how their world is supposed to work, and she doesn't act like a normal hostage at all, which throws him off constantly. Fans often note how he gets genuinely confused by her behavior since it doesn't fit the script. He's also surprisingly awkward around her—not in a sinister way, but more like he just hasn't spent much time around humans and doesn't really know how to act. It's one of those character quirks that makes him less threatening and more endearingly bewildered than you'd expect from a final boss.
Content compiled by AnimeList.moe from publicly available sources.
