Milly Alcock Cast as Supergirl in Gunn’s DCU James Gunn and Peter Safran's DCU reboot has cast Milly Alcock, known for her role as Princess Rhaenyra Targaryen in House of the Dragon, as Supergirl. Alcock reportedly beat out Emilia Jones and Meg Donnelly for the role, according to a report by Deadline. It's uncertain whether... Continue Reading →