The Dummy

The Dummy (Danny) is a villain who first appeared in Batman #134 (September 1960). He uses dummies for villainy to make them illegal due to the fact that he is enraged that people refer to him as "the Dummy."

Fictional character biography
Danny the Dummy, a pint-sized ventriloquist in a top hat and suit, has a hit act in which he plays the dummy to a normal sized "ventriloquist" Matt (who is revealed as the real dummy at the end of each show). But the fact that people invariably refer to Danny as "the Dummy" infuriates him, and inspires him to use dummies for crime to make dummies out of the law.

Powers and abilities
Expertise in ventriloquism.

Paraphernelia
The Dummy uses dummies in his schemes.