Pamela Isley, also known as Poison Ivy, is a prominent character in the Batman series, particularly in the story arc 'Batman: Hush'. Poison Ivy is a botanist turned eco-terrorist with the ability to control plant life and secrete toxins. She often uses her powers to manipulate and control others, including Batman himself. In 'Batman: Hush', she plays a significant role by being one of the villains orchestrated by the mysterious Hush to bring down Batman. Her deep connection with nature and her seductive yet deadly persona make her a complex and enduring character in the series.