In a new teaser trailer released by Max, we get a sneak peek at what's to come in the fifth season of Kaley Cuoco and Lake Bell-starring Harley Quinn. The series is set to return on January 16th, with Harley and Poison Ivy making the move to Metropolis and encountering new threats from Lex Luthor and Brainiac. With an all-star cast and exciting new setting, fans of the popular adult animated series won't want to miss out.