Cur, along with associates Lar and Mo, were three thugs hired by various villains, mainly Joker. They closely resembled three members of The Three Stooges, Moe, Larry, and Curly. They shared their namesake's trademark hairstyle: Mo had a black bowl cut, Lar had the ring of brown hair, and Cur was bald.
History
Lar and Cur helped Joker infiltrate the annual Gotham Laugh-Off competition, and were elected as Joker's self-appointed judges, supplying him with a bomb to destroy the terrified audience. Batman and Robin deflected the bomb with a batarang, then landed directly on top of Cur and Lar, sending the thugs crashing to the floor.
Cur and Lar assisted Joker in kidnapping the mayor and trying to blow up Gotham City. They piloted his getaway airplane, but Joker threatened to machine-gun them if they did not let him get a good shot at Batman. They eventually crashed the airplane, and dodged machine gun fire by Joker, who had been knocked out by a small clown projectile fired by Harley Quinn with his finger on the trigger. Cur and Lar survived the crash, and crawled out of the wrecked plane.
Cur and Lar would be joined by a new associate, Mo. Batman and Creeper caught the three thugs on their night off playing billiards, but Mo opened fire with a machine gun, promising Batman would never take him alive. Batman eventually took down the three thugs.
They would next come under the employ of Riddler. The trio tried in vain to save Riddler from Two-Face, who had disguised himself as The Judge.
Powers and Abilities
Mo, Lar, and Cur were always as mimes, wearing black mime costumes and simple pale white makeup over their faces. They were skilled in hand to hand combat, and could jump with agility from rooftop to rooftop. They all possessed great strength.
In other media
Mo, Lar, and Cur appear as enemies in the video game Batman: Vengeance, based on The New Batman Adventures. During a cutscene in the game, Cur mentions they have worked before for The Penguin, and had a salary of $10,000.