Warner Bros. and DC Entertainment are developing a new standalone movie featuring an all-star cast of female DC heroes and villains with Margot Robbie attached to reprise her role of Harley Quinn.

Robbie will also produce the pic, which will not only feature Quinn, but popular characters such as Batgirl and Birds of Prey also making appearances. Who exactly will be considered the lead opposite Robbie is still unknown. Exact plot details are also unknown currently.

Robbie will first appear as Quinn in “Suicide Squad” opposite Will Smith and Jared Leto. Though the film doesn’t bow until August, Robbie has already garnered attention for her performance as the fan-favorite character, which studio had always seemed interested in spinning off to other movies.

Robbie has not only “Suicide Squad” debuting this summer, but also “Legend of Tarzan” coming out in July, where she will star as Jane opposite Alexander Skarsgard.

Robbie is repped by CAA, Management 360, Aran Michael Management and Jackoway Tyerman. The Hollywood Reporter first reported the news.