River

From my perspective, Poison Ivy is one of my kegemaran Batman characters; one reason why is because she reminds me of nature and plants.

Also, I can imagine an alternate version of the scene in the Season 3 episode Batgirl Begins Part 2 (from The Batman) where Barbara is quite surprised at her friend Pam’s new look.

In it, both Pam and Barbara are in Barbara’s room together, and Pam tells Barbara that she’ll do great with gymnastics, before River Phoenix (who would’ve loved to voice Poison Sumac, which would’ve been a good name for a male version of Poison Ivy if there ever was one)...