These 2 have a long history together, even before the New 52. I’m glad DC Comics is slowly transitioning both into the anti-heroes territory. If you think about it, how can Poison Ivy really be a villain if she’s fighting for the environment. It’s only when she pulls stunts like robbing a bank that classifies her as a villain, and I have a hunch she’s gonna use those for environmental purposes.
You just gotta love how Poison Ivy acts like the mature big sister to Harley Quinn’s childlike impulses. These 2 balances each other out.
From – Harley Quinn Vol. 2 #25