October is the month of the Joker, but not every comic book is about the Joker. Justice League #13 seems to have Cheetah as the villain. DC Comics has a bit of the plot story:
The League takes on a villain destined to be one of the greatest threats to the DC Universe in the year ahead – the mysterious Cheetah! But who is she? What is her connection to Wonder Woman? And how will this fundamentally change the relationships within the team?
Whatever, Cheetah is up to. It must be big. See the variant covers of Justice League #13 down below.
Source- DC Comics