Filming on that movie is scheduled to start next month. In any case, she will be keeping busy, as she has just joined the cast of the action movie sequel The Expendables 4. It's hard to say as of now whether Megan Fox will ever join the DCEU, and if so, if she'll be playing Poison Ivy.
Clare Foley, Maggie Geha, and Peyton List shared the role in the prequel series Gotham and she will be played by Bridget Regan in the third season of Batwoman. She was played by Uma Thurman in Joel Schumacher's Batman and Robin, and she hasn't appeared in a live-action movie since. Peyton List is the new actress who will play the role of Poison Ivy in the latter half of Gotham season 4. Her appearance also changed after drinking some mystical chemicals, and she is now more intent on terrorizing the people of Gotham. Traditionally, Poison Ivy is depicted as a supervillain who uses the power of plants to her advantage. Poison Ivy has become even more dangerous now that she has greater powers to control and manipulate people. I've been trying to-I would love to have Poison Ivy thrown into the universe, because the Harley and Poison Ivy relationship is one of my favorite aspects of the comics, so I'm looking to explore that on screen." In some comics they convey it as a friendship in other comics you can see that they're actually sexually involved as a couple. In a separate interview with PrideSource, Robbie added: "If you read the comics you know that Poison Ivy and Harley have an intimate relationship. Come on, let's do it.' I'm very keen to see a Harley-Poison Ivy relationship on screen.
"They must be sick of hearing it, but I'm like, 'Poison Ivy, Poison Ivy.
"Trust me, I chew their ear off about it all the time," Robbie told Den of Geek. In fact, she said she's been trying to talk the studio into it for a long time, and she has promised to keep it up until it finally happens. It helps that Birds of Prey and The Suicide Squad star Margot Robbie has been lobbying for Poison Ivy to come into the DCEU to further explore her relationship with Harley Quinn. Poison Ivy's entrance into the DCEU does seem to be inevitable, but it remains unclear when fans might see the character arrive. This is not the first time fans have gotten on board with the concept, as many had previously campaigned for Fox to get the part when she said she wanted to join a major superhero movie franchise. With the new image floating around, there is a renewed call from fans for Fox to get the role of Poison Ivy. Even so, many DC fans are on board with the idea. This is certainly not an official casting announcement.