One small step for the Gotham villains, one giant leap for clown-kind! That's right...this fashionably vocal clown is headed to space. Turns out there's some old experiment left in the JLA moon base, and Luke Fox has put together a team of former villains to help clean up the mess. Sendin' a buncha villains to the moon...what could go right?! Join me, Killer Frost, Bronze Tiger, Solomon Grundy, and more as we learn to moonwalk and put the X in Task Force XX! Collecting Harley Quinn #18-21 and the Harley Quinn 2022 Annual.