Riddle U

After learning that Riddler is the only one with power and clean water, Harley, Ivy, and Clayface make plans to infiltrate his stronghold, "Riddler University" while King Shark and Doctor Psycho venture through Two-Face and Bane's territories to secure a water filter. However, Harley nearly blows her cover after attacking the mascot in front of the tour guide, Barbara Gordon. Harley and Ivy track down Barbara to kill her before she can warn Riddler, but she tells them she wants to stop him after deducing he was responsible for kidnapping students ever since he took over and that she procured invitations for a party at a fraternity house where the disappearances are happening. Harley and Ivy steal the invitations for themselves and Clayface and successfully enter the party, where they learn that the kidnapped students are being used as human batteries before Riddler captures them. Meanwhile, dissatisfied with doing nothing, Barbara becomes inspired by her father, Commissioner Gordon, to stop Riddler herself. Despite being outnumbered, she manages to take out the generator, subdue Riddler, and free everyone. Instead of killing Riddler, Harley, Ivy, and Clayface use him to power the mall while Barbara makes the decision to become Batgirl.