Margot Robbie has a fourth Harley Quinn project in the works

That's as well as a 'Suicide Squad' sequel, Harley/The Joker spin-off, and 'Gotham City Sirens' movie

Margot Robbie has a fourth Harley Quinn-focused project in the works.

The actor played the character in last year’s Suicide Squad movie, and has since been confirmed to reprise the role in the sequel, a spin-off centred around Harley and The Joker, and a Harley-focused Gotham City Sirens film.

In an interview with MTV, Robbie revealed she has been working on another Harley project for two years. “I mean it’s hard to kinda talk about it because all this stuff is under lock and key, but yeah I’ve been working on a separate spin-off for Harley for a while now,” she said.

“Honestly, I don’t think anyone knows what’s going to be the next thing to happen, but I think everyone is keen to getting Harley back on screen so everyone is working on lots of different versions of what could be next.”

Speaking about what she would want to do with Harley in the project, Robbie said: “I would like to see her with other women. I kept saying it when we were shooting Suicide Squad – she needs her girlfriends. She needs other girls around her cos she loves that.

“You see it in the comics. She loves meeting people – any people – but she needs a little girl gang.”

Meanwhile, production on the Suicide Squad sequel is expected to begin next year. It will not be directed by David Ayer, who was at the helm for the latest movie, but will instead be directed by Gavin O’Connor (Warrior, The Accountant).