6. Harley Renames The Arrowcave (Injustice: Gods Among Us #5)
Last year, these two characters built up a wonderful on-panel chemistry, thanks largely to Tom Taylor's writing. In Injustice: Gods Among Us #5 (which was by no means even close to being the best overall issue in this arc, which served as a prequel detailing the events leading up to the video game of the same name), Harley Quinn wakes up handcuffed in Green Arrow's Arrowcave, having been apprehended by the hero when she escaped from the police and killed several police officers. Upon coming round, Harley asks where she is and the following conversation ensues:
Harley Quinn: ""Arrowcave" is a pretty stupid name, though."
Green Arrow: "Hey!"
Harley Quinn: "I know Batman has a Batcave but that makes sense. Bats live in caves. Arrows don't live in caves. They're inanimate objects, they don't live at all. Why don't you call it, like, "The Quiver?""
Green Arrow: "That... is actually better." It's an absolutely brilliant little exchange that epitomises the comedic relationship these two constructed in 2013 (another fun part in this issue is when Green Arrow catches Harley and he shoots an arrow straight in to the barrel of her gun and she says "No.Way... Shoot another arrow into my gun barrel. That was nuts!").