Sheis a plant controlling super-villainess who frequently battles with the Dark Knight, Batman. She is also a longtime friend and ex-wife of Harley Quinn. Despite her plant-based powers, she is a Gadget User. Poison Ivy appears as a playable character in Injustice 2 (2017).
Poison Ivy ambushes and captures Black Canary, Green Arrow, and Harley Quinn when they try to intercept the shipment of fear gas in Slaughter Swamp. Harley is at first relieved to see her, hoping that she will help them, but Ivy later admits that she is part of the Society, much to Harley's disappointment and sadness. She then explains that Batman had promised to preserve the Green, but all Batman had done was build more cities over the Green, making Batman no different than Superman in her eyes. While she was explaining her motives, however, Harley had been cutting the vines holding her, and after Ivy finishes her statement, she successfully escapes, followed by Canary and Arrow. Harley tries one last time to convince her to turn on the Society and join them; she coldly refuses the request, and the two fight, with Harley emerging as the victor.
She later ambushes Cyborg, Catwoman, and Harley Quinn at Arkham Asylum and infects Harley with her iconic pink pheromones, causing her to attack either Cyborg or Catwoman (depending on the player's choice), while the other will battle Poison Ivy. Either way, Harley Quinn is eventually defeated. Poison Ivy then expresses disgust towards Catwoman, who was spared from the harsh treatment at Arkham Asylum (thanks to Batman) that the other inmates had to undergo. Suddenly, Harley Quinn begins to go into shock, forcing either Catwoman or Cyborg to try to take care of her, while the other fights Poison Ivy, with either Cyborg or Catwoman emerging victorious. She is not seen again for the rest of the game.
Ivy uses her plants to assist in her attacks with methods such as poison, tendrils, and even creatures made from her plants. Ivy's agility and strength have improved, allowing her to fight bare-handed with little difficulty.
Of all the men I've charmed, Brainiac was the most useful. With his help, I finally slaughtered the so-called heroes. Then I whispered in his ear, "Collect every last city on Earth and I'll give you a kiss." And he did. Every last city, I finally brought human civilization crashing to the ground. As for Brainiac, he got the kiss he deserved. But he was just a fling. After all, I was going to be busy leading the Green... I should've known there'd be some competition. Swamp Thing's sympathy for humans makes him weak. The plants know I'm their real guardian. And when the leaves settle, there will be no doubt--this world is mine.
Poison Ivy is the alter ego taken by Dr. Pamela Lillian Isley, an eco-terrorist and prominent enemy of Batman. First appearing in Batman #181, she is depicted as one of the world's most prominent eco-terrorists, motivated by an obsession with plants, misandry, botany, and extremist environmentalism with a desire to save the world from the evils of man through any means necessary. A genius scientist and meta-human with hybridized plant DNA, Poison Ivy uses mutant plants, will-bending pheromones and toxins from plants and her own bloodstream for her criminal activities. Ivy has also developed a special relationship with fellow villain Harley Quinn, with the two often being depicted as recurring partners-in-crime, friends and, sometimes, love-interests.
Pre-Crisis, Dr. Pamela Lillian Isley, a promising botanist from Seattle, was seduced by her botany professor Marc LeGrande into assisting him with the theft of an Egyptian artifact containing ancient herbs. Fearing she would implicate him in the theft, he attempts to poison her with the herbs, which are deadly and untraceable. She survives this murder attempt and discovers she has acquired an immunity to all natural toxins and diseases. FBI eventually found out about those events, but they kept her name incorrectly as Lillian Rose.
Poison Ivy's first crime in Gotham City was interrupting an opening at the Gotham Art Museum during a pop-art exhibit revolving around bug-themed woman villains Tiger Moth, Silken Spider and Dragon Fly. Ivy challenged the three so she could be seen as the number #1 woman criminal in Gotham before making a getaway when Batman and Robin showed up. During her getaway, she managed to have Batman develop feelings for her, quite possibly through her use of pheromones. Ivy managed to organize a trap to capture Tiger Moth, Silken Spider and Dragon Fly, but was stopped by Batman, using willpower to his attraction to her and sent Ivy to jail.
When Batman tried recovering from his infatuation, Poison Ivy sent him a compact-mirror from prison with her likeness in it along with some modification that caused Batman to be hypnotically infatuated with it. With the mirror in his possession, Batman was unable to continue crime-fighting without distraction. When the mirror was smashed in a fight, Ivy feigned heartbreak and manipulated Batman into freeing her from prison, only for the Dark Knight's willpower to once again wake him up and help him overcome and arrest Ivy.
After Batman faked his death to investigate a murder-case commit by one of his super-criminal enemies, he posed as Two-Face and arranged a trial to find who killed, "Batman" (actually the murder-victim in a Batman costume). Poison Ivy was assembled to be part of the jury alongside the imposter Mad Hatter, the Scarecrow, the Spook, Signalman, and Mr. Freeze. With Ra's al Ghul as judge and, "Two-Face" as prosecutor, it was eventually determined that Joker was the killer.
A later scheme of Poison Ivy was to use a pheromone-induced lipstick on every member of Wayne Enterprises, including Bruce Wayne. She subsequently used the pheromones to force them all into signing full-ownership of Wayne Enterprises over to her. After signing, Bruce Wayne changed into Batman attire and tried to stop her, only to be incapacitated by Ivy's mutant vines. Following her getaway, Isley began arranging for her takeover of Wayne Enterprises.
Before Batman could stop Isley's corporate takeover, he became preoccupied with fighting Man-Bat, Mad Hatter and the Dagger, causing him to become exhausted. Because of this, Ivy was able to successfully claim all of Wayne Enterprises' money and spent it lavishly, all while being tormented by Batman stalking her from a distance. Batman eventually confronted Ivy in a greenhouse to try and extract a confession for her mind-controlling, only for her to transform her henchman Ivor into a giant plant/human monster and have him fight the vigilante. After defeating Ivor, Batman extracted a confession from him which let the police arrest Ivy.
Poison Ivy's final scheme in Earth One continuity occurred after she was released from prison. Ivy bought a lodging in Crime Alley where she set up a laboratory that she and new henchman Doctor Lignier used to engineer humanoid plant monsters, able to rapidly grow from small seeds. Ivy released a cloud of these seeds onto Gotham, creating monsters which Batman fought alongside a pre-Robin Jason Todd, who was in the process of proving himself as a worthy partner. Ivy also set up a fake spa called, "Exotica" which she invited all members of the Wayne Enterprises board to, with the only members not attending being Bruce Wayne and Lucius Fox.
Poison Ivy induced each member of the board with brain-numbing pheromones and had them leave with a mutated, "Souvenir" plant, causing them to become negligent and ruin Wayne Enterprises from the inside. Batman confronted Pamela in Crime Alley but as he had no evidence, he returned later in the night with Jason and found her mad-science experiments. While Batman and Jason fought Ivy's plant-monster guards, Ivy disappeared and set the building on fire to kill the vigilantes, Doctor Lignier, and destroy evidence of her crimes. Jason was able to save Batman, with this being the first adventure where Batman called him, "Robin", leading to him taking up said mantle later after a discussion in the BatCave.
Following the merging of realities during the cosmic event known as the Crisis on Infinite Earths, her origins were revised. Pamela Isley grows up wealthy with emotionally distant parents. She later studies advanced botanical biochemistry at a university with Alec Holland under Dr. Jason Woodrue. Isley, a timid, shrinking violet, is easily seduced by her professor. Woodrue injects Isley with poisons and toxins as an experiment, causing her transformation. She nearly dies twice as a result from these poisonings, driving her insane. Later Woodrue flees from the authorities, leaving Pamela in the hospital for six months. Enraged at the betrayal, Pamela suffers from violent mood swings, being sweet one moment and like poison the next. When her boyfriend has a car accident after mysteriously suffering from a massive fungal overgrowth, Isley drops out of school and leaves Seattle, eventually settling in Gotham City.
Taking the costumed persona of Poison Ivy, she begins a criminal career and sets out to show her power over men. Her first scheme involved threatening to release her suffocating spores into the air unless the city meets her demands. The Batman, who appears in Gotham that very same year, thwarts her scheme, and she is incarcerated in Arkham Asylum for the Criminally Insane. From this point on, she has a kind of obsession with Batman, he being the only person she could not control. Over the years, she develops plant-like superpowers, the most noticeable being a lethal toxin in her lips; she is able to literally kill with a kiss.
Poison Ivy escaped from Arkham Asylum again and again, more often seducing her guards in order to make her getaway. She soon became a frequent member of Batman's Rogues Gallery, often committing robberies to fund her cause for preservation of all plant life. Poison Ivy soon came into conflict with many other heroes in her insane quest, such as Superman and Wonder Woman. She fought the Justice League at least once and joined the Injustice Gang to help oppose them.
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