Poison Ivy
Pamela Isley was a brilliant botany student until she was seduced by her professor Dr. Jason Woodrue. As an experiment, Dr. Woodrue injected her with various poisons and toxins. Pamela survived, but was left mutated and insane.
Pamela would become known as Poison Ivy, possibly the leading eco-terrorist in the world. With phenomenal control over all plant life and immunity to all poisons, Ivy has no hesitations about killing anyone she deems a threat to the environment.