8 Video Games That Made You Regret Killing Bosses

8. Nier: Automata

Simone is one of the most memorable bosses in Nier: Automata - a robotic opera singer who lures 2B and 9S to the amusement park where she's holed up to do battle. 

Simone's aggressive and highly theatrical attempts to make mincemeat out of the duo don't evoke much immediate sympathy at all, even as her moment of defeat offers a brief hint that there's far more to her story than meets the eye.

And indeed, players who battle Simone once again as 9S in Route B will learn about her tragic backstory during the fight's various hacking mini-games. 

Basically, once upon a time Simone was a regular machine who grew obsessed with another, Jean-Paul, and believed that if she adorned herself with more machinery, he might finally notice her.

This obsession ultimately turned Simone into a psychotic robotic cannibal who covered herself with dead machines. 

And when she's finally defeated this time around, it's accompanied by her final plea for someone, anyone, to just look her way. Poor lass.