"How about Y?" A voice asked.

Duke walked through the wall with the clocks and stopped in front of the 'Genealogy' filing cabinet.

"For 'You are an idiot'."

It was Duke's voice, but everything about it was wrong. The tone. The timbre. The enunciation. He sounded like an alien, someone only vaguely familiar with how human speech actually worked. His posture was wrong, too, head held too far forward, chin down, shoulders high and tense. Arms too still as he walked.

Also, his eyes were solid black. So there was that.