Poison Ivy

Pamela Isley was a botanist and environmentalist who began using plant based pheromones and toxins to attack what she viewed as the enemies of nature. Eventually, through exposure to her own toxins, her powers grew, until she could control monstrous plant creations. Batman has constantly foiled her plans, often by harming her precious plants, causing Poison Ivy to hate him as well.

The beautiful seductress is incredibly powerful and very deranged. She has been detained in Arkham Asylum and Akrham City.