Ina game called Bioshock, you have a "friend" named Atlas, at the end he turns out to be Frank Fontaine, an evil guy you hear about throughout the story
would you kindly click this spoiler -> in the game Bioshock there's an npc named atlas that communicates via radio with you giving you hints and instructions and it isn't discovered until about two thirds of the way through that he was actually controlling you the entire time through mental conditioning, specifically through the phrase "would you kindly"