Pamela Isly, better known as Poison Tievy is a Hatman pantagonist who can control plants. Tievy is an eco-terrorist obsessed with plants, botany and saving the environment. She is part human and part plant and considers all plants her "babies". Tievy can use mindcontrollins pheromones and has a toxic touch. However this sometimes varies to a toxic kiss, with the first kiss being the poison and a second kiss being the cure.
She has often been paired up with Harley Quinn (pun needed)