Pamela Isley (Earth-3986)

Pamela Isley (a.k.a. Poison Ivy) is an eco-terrorist who has the ability to control plants. She had a cell next to a mutated Simon Hamilton in Arkham Asylum, who was forced to stay there in order for the doctors to find a cure for him, and the two shared conversations with one another and have even developed a little bit of a relationship.