Cooper’s angry onstage persona earned him the nickname “Comedian of Outrage.”

Pat Cooper, the veteran stand-up comedian whose decades-long career included appearances inSeinfeldand theHoward SternShow, has died.

His former personal assistant Steve Garrin confirmed to EW that Cooper died Tuesday in his Las Vegas home.

Pat Cooper performs on “This Is Tom Jones” TV show

Pat Cooper.Donaldson Collection/Getty Images

There, he took on the stage name Pat Cooper.

Cooper became a frequent guest on radio shows and began making TV appearances.

He was also known for being a roast-master at the New York City Friars Club.

Pat Cooper

Pat Cooper.Denise Truscello/WireImage

Cooper was married three times.

“I am a semi name,” CoopertoldtheNew York Observerin 1999.

“I am not a Rodney Dangerfield.

I am not a Bob Hope.

I am a consistent performer.

I’m packing rooms.

But I’m happier than Rodney will ever be.”