SHODAN is the epitome of a diabolical machine. While GLaDOS may be the new standard for homicidal computers and Fontaine is the standard for traitorous allies who become the main foe, you have to recognize the lady who did both, first.
Like GLaDOS, SHODAN constantly harangues the player during their quest. While GLaDOS is amusing in her antics, SHODAN is downright terrifying. “The Polito form is dead, insect. Are you afraid? What is it you fear? The end of your trivial existence? When the history of my glory is written, your species shall only be a footnote to my magnificence.” She constantly refers to the player and humans as insects and cockroaches she seeks to exterminate. And her voice will haunt our dreams for years to come.
You’d think we would have learned our lesson with A.I.s by now.