"There's still a feeling of unfinished business," Bilall said. "Our love for DC, Batman, Batgirl, Gotham City, it's so big that, as fans, we could never say no to another project," Adil said.

In 'The Flash' movie, we all know there's a big problem ... think we can make them even better," Zaslav said. In the case of "Batgirl," it was developed as a straight-to-HBO Max movie.