Sailor Moon 9
Basically Queen Beryl is an idiot and if I was Glorious Demon King Ruler Who Lacketh a Name, I would be pretty disappoint in this woman. I mean Jadeite comes up to her and is like "Hey Majesty, I have a -GREAT- idea!" And Queen Beryl, instead of rolling her eyes and being like "Oh come on, Jadeite, you've fucked up eight times this week." She's like "ORLY?" and he's like "WHAT IF WE STEAL TIME!" and she goes for it.
I mean, Emperors Gore and Burai were dumb, too, trusting the likes of Demon Adolf Hitler, but come on, lady! Dude looks like Glemy Toto and he's failed every plan he's had. Maybe get a new minion? Maybe at least express displeasure? Which is another thing. Burai made fun of Hitler CONSTANTLY, but so far Beryl's been pretty darn chill about this.
Also, I'm fairly unclear on this point: When Sailor Moon beats her enemies, does the energy flow back to people? Because I could see Beryl being much less angry if not. If they're actually successfully harvesting energy things make more sense to me.