Dent, along with several other Batman villains, is tricked by Jack Napier (who in this reality was a Joker who had been force fed an overdose of pills by Batman which temporarily cured him of his insanity) into drinking drinks that had been laced with particles from Clayface's body. This was done so that Napier, who was using Mad Hatter’s technology to control Clayface, could control them by way of Clayface's ability to control parts of his body that had been separated from him. Dent and the other villains are then used to attack a library which Napier himself was instrumental in building in one of Gotham City’s poorer districts.