The bad guy that is omniscient and omnipresent. Everywhere you go, oops! There's the bad guy and he totally kicks your ass and ruins your plans.
We call it Neganing. He's the reason I eventually stopped watching the Walking Dead.
Or like Sylar (from Heroes), where the writers find a baddie they just live too much to kill so the whole show becomes about them.
Romantically Apocalyptic sticks out in my mind.
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