Heckler

Heckler is exactly what his name promises: a robot who turns up in crowds, audiences, and public gatherings to shout insults at whoever is performing, arguing, or trying to make a point. He wants nothing more than the last word, and he is never short of one, no matter how flimsy the target.

He's a one-joke premise executed with total commitment, and John DiMaggio gives him the gravelly, bored contempt of someone who has heckled a thousand acts and expects the thousand-and-first to disappoint too. The joke is that he's always right there, ready, for absolutely nothing.