The Carpenter

Jenna Duffy was a pickpocket and con artist operating out of Keystone City who moved to Gotham when she attracted unwanted police attention. Eventually, she was enlisted by Tweedledum and Tweedledee to serve as the "Carpenter" for their new Wonderland Gang. The gang has been incarcerated by Batman at least twice, but she appears to continue to be an active member. She debuted in 2008.

The Detective Comics
Her first appearance is in Detective Comics , where Batman investigates a growing new team of costumed crooks, "The Wonderland Gang". Led by the Mad Hatter and featuring Tweedledum and Tweedledee, they quickly amass high-class muscle from all over Gotham dressed as different Lewis Carroll characters, such as the Carpenter, the Walrus, the Lion, the Unicorn, and the March Hare. Finding the crimes somewhat amiss, Batman eventually tracks the gang down to the House of Mirrors at the Gotham Amusement Park. He finds Tetch, the Mad Hatter, spinning aimlessly on the Teacups ride. Sure enough, Tetch is victim of one of his own mind-controlling chips, which Batman removes. He then goes in and confronts the gangs real leaders, Tweedledum and Tweedledee. While Batman is battling the rest of the Wonderland gang, Tweedledum and Tweedledee both escape outside only to be subdued by the Mad Hatter, who beats them both unconscious with an oar. Batman calls Jim Gordon to tell him where to pick the gang up, and to make sure his men know to take it easy with Jervis Tetch, who really hadn't done anything wrong.

She makes an appearance with few of her new friends, the Walrus and the Tweeds, in Detective Comics, where they made another attempt to commit their crimes, but while Batman was busy going against Hush, Nightwing, Robin, Catwoman, and Zatanna apprehended the Wonderland Gang once again.

Gotham City Sirens
She makes three appearance in the Gotham City Siren comics. In Gotham City Siren #5, she is requested by Catwoman, to help reconstructed the recently destroyed headquarters of Harley Quinn, Poison Ivy, and Catwoman's. In Gotham City Sirens #6, she gets more of her equipment from her van and continues to rebuilds their hideout. In Gotham City Sirens #7, she is finished with the repairs and demanded more money from Catwoman, since she did her job 'legally', which Catwoman agreed.

Batman: Streets of Gotham
She made her recent appearance in Batman: Streets of Gotham comics. In Batman: Streets of Gotham #12, she is requested by a new villian, that goes by the name of the Director, where she is constructing a stage where Batman will die. Yet, in Batman: Streets of Gotham #13, she makes a huge discovery that not only will Batman die on the stage, but herself as well. She escapes with her life and Batman easily defeats the Director on his own stage.

Batman: Arkham City
Although she isn't confirmed yet in the game, she appears in 2nd digital issue and the 5th story issue of the Arkham City comics. In the digital issue, the whole issue is about her trying to escape the prison before she is caught. Her fliers are seen in Arkham City, stating that if you need any repairs, call her. Few of her friends from her gang were seen inside the prison, already. In the final story issue, she is one of the few villains, observed by Hugo Strange, where she is trying to catch a bus. What she doesn't know, is that she is already too late and she is in Arkham City.