Betrayal of trust is the ultimate plot engine in modern entertainment. From shocking reality TV blindsides to massive cinematic twists, audiences cannot get enough of seeing characters deceive one another.

Why does betrayal resonate so deeply in our pure entertainment? Because it violates the most basic human contract: I believe you have my back.

"I’ve always hated you." Reiner and Bertholdt reveal they are the Armored and Colossal Titans. Reiner holds Eren, whispers, "I’m a warrior," and then tears his hand off. The Gut Punch: We lived with these guys for 30 episodes. We watched them eat bread and fail pushups. To find out they were sleepers ? That’s not a twist. That’s a home invasion of the heart.

The shove. Han Mi-nyeo (Player 212) spent the whole game being annoying. But when she clung to a man’s leg and dragged him off the glass bridge to his death because she couldn’t cross? That’s primal. She betrayed the last shred of teamwork in a game designed to kill trust. Iconic? Yes. Evil? Also yes.