GLaDOS
Portal · 2007
An entire beloved villain built from tone of voice and nothing else. You never fight her until the very end and she still dominates every minute.
Video game villains have a tool no other medium offers: the player is doing things, not watching them. The strongest characters on this list use that directly. They talk to you, they punish you, they make you perform the terrible act yourself, or they simply refuse to let you feel safe in a space you thought you had cleared. Interactivity is the criterion that separates the top of this list from the rest.
How this list was scored. Weighted on use of interactivity and player relationship (30%), writing and voice work (25%), design and presentation (25%) and influence on game design (20%).
Media mix: Video games (15).
Portal · 2007
An entire beloved villain built from tone of voice and nothing else. You never fight her until the very end and she still dominates every minute.
Final Fantasy VII · 1997
The medium's most famous story moment belongs to him, delivered a third of the way into the game with no warning at all.
BioShock · 2007
His confrontation turns the act of playing a game into an argument about free will, and it is still taught in design courses two decades later.

He talks at you for most of the game and is funnier than the game around him, which somehow makes the mass murder land harder.

You play the missions that turn him. Very few games have made an audience this complicit in their own villain's creation.

He is not attacking you, he is sentencing you, and realizing that is the point of the entire game.

The clown nobody took seriously destroys the world at the midpoint, and the second half is played in the ruins. Almost no other game commits to that.

The voice that every hostile game intelligence since has been imitating, and the player is the reason she exists.

Nine console generations of art styles and he is still recognizable, still the same war, still already sitting on the throne when you arrive.

Forty years as the antagonist of the best-selling franchise ever made, with more accumulated personality than most protagonists.

He was your team leader in the first game. Everything absurd he became afterwards is part of why the series is beloved.

A handful of scenes carried an entire franchise's marketing, and the monologue is still quoted by people who never finished the game.

The arcade wall an entire generation hit, and the definitive fighting game final boss template.

It taught horror games that safety should never be permanent, and the persistent stalker is now genre standard because of it.

Cheerful, brilliant and endlessly unsuccessful. He is the most likeable failure in gaming and the series would be much worse without him.
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