Everyone at NYC ad agency R/GA surprised its CEO by dressing up as him for Halloween

The CEO of New York City-based ad agency R/GA, Bob Greenberg, has a signature style: A black shirt, a black scarf, black pants, topped off with a black beret.

This Halloween, R/GA staffers decided to pull a surprise on their longtime leader by dressing up as him, as AgencySpy's Patrick Coffee first reported on Monday.

The agency had been planning to pull the stunt for a while, but only finally plucked up to the courage to do it on Monday, according to AgencySpy.

A source inside the agency told Business Insider Greenberg was told to attend a meeting, but then arrived to find dozens of Greenberg clones on the agency's staircase. We're told he took it in good humor.

Here's Bob with his army of Bobs: