The Crucial Way Batman: The Animated Series Changed Poison Ivy Forever

https://www.looper.com/1299628/how-batman-animated-series-changed-poison-ivy/

Harley and Ivy's relationship has become a pretty big deal

Anyone who watches the "Harley Quinn" animated series will know that the love story between Harley Quinn and Poison Ivy remains a central part of the show across the many wacky misadventures of its offbeat protagonist. Being that the two first met and worked together in "Batman: The Animated Series," this makes the earlier episode especially important to their overall mythos.

Furthermore, the two characters are seen as roommates in Season 2, Episode 7 ("Girls' Night Out") in "The New Batman Adventures." They're even seen sharing a hideout in the follow-up crossover series, where they seem to have a close and comfortable friendship, and consistently contemplate their failed criminal endeavors. 

This depiction, in particular, suggests a special bond between the two that would help to lay the groundwork for their eventual love story. However, as the series went on, Ivy's redesign made her look increasingly inhuman in later episodes. Poison Ivy has regularly been seen since with her green skin and vast plant-controlling powers. Take for example her appearance and terrifying abilities in the "Arkham" video games. These depictions of her as a close friend and confidante of Harley Quinn in "Batman: The Animated Series" and the later changes to her appearance are arguably the biggest contributions from this particular iteration of the character.