This "Birds of Prey" shortlist is very encouraging.

including pushing for diversity in casting.

Now The Hollywood Reporter has revealed the reported frontrunners who have tested or been considered for key roles in the supervillain film.

Warner Bros. will be making casting decisions within the next two weeks, THR reported, since filming is expected to start in early 2019, with Cathy Yan as director.

Deadline also added their two cents -- seconding that Huntress, Rene Montoya, and Black Canary would be a part of Harley Quinn’s all-girl gang. "They take on Batman villain Black Mask, with the help of Cassandra Cain."

According to Cristin Milioti ("USS Callister").

Mbatha-Raw is said to be in the running for Black Canary, along with Janelle Monae.

Sofia Boutella ( "The Mummy") to the list of Huntress candidates.

For the role of Gotham City detective Renee Montoya, THR said Roberta Colindrez ("Vida," "I Love Dick") both tested.

THR said Warner Bros. is looking to cast Cassandra Cain -- who took on the role of Batgirl for a while -- as a 12-year-old girl. The character is of Asian decent in the comics, and they are looking to cast a young Asian actress in the role.

That's a tough lineup to choose from. No one has asked for our yet, but anytime you can get Mary Elizabeth Winstead in something, do it. Pair her with either Gugu Mbatha-Raw or Janelle Monae (or find a way to add both), plus Justina Machado and Margot Robbie, and we're ready to go.

Official casting soon. Reports say filming is scheduled to begin mid-January in Los Angeles.

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