Poison Ivy

Poison Ivy is the third member of the Gotham Sirens who should be included in a Harley Quinn spin-off. Leaving aside her long history with Batman (she is, after all, one of his most enduring rogues), what is more interesting is her relationship with Harley.

And, obviously, I am talking about their romance. Bringing this love affair to the big screen should be a move that would please lots of fans – and, if I am not mistaken, this could also be a first LGBT relationship in a superhero flick.

Plus, she also has superpowers. Which is always nice, especially when most of the other characters are just skilled combatants. Poison Ivy was previously portrayed by Uma Thurman on the big screen – but I guess we can all agree that it wasn’t the best portrayal of a comic book character.

So Poison Ivy would be a great addition to the roster.