allied mastercomputer

Allied Mastercomputer, aka AM, Adaptive Manipulator, or Aggressive Menace, is the main villain in the book/game I Have No Mouth And I Must Scream by Harlan Ellison.

"What does AM mean?"
Gorrister answered him. We had done this sequence a thousand times before, but it was Benny's favorite story. "At first it meant Allied Mastercomputer, and then it meant Adaptive Manipulator, and later on it developed sentience and linked itself up and they called it an Aggressive Menace, but by then it was too late, and finally it called itself AM, emerging intelligence, and what it meant was I am ... cogito ergo sum ... I think, therefore I am."