Rose took to her Instagram Story to call out the toxic conditions and alleged appalling behavior she experienced on set.
The actress exited the show last May after one season in the role.
Day shared the exciting casting news to her Instagram on Sunday.
ET spoke with the actress about her new action thriller and what her next steps are following her 'Batwoman' exit.
ET caught up with actress Ruby Rose ahead of her new film, ‘The Doorman,’ available on Digital on Oct. 9.
The actress left 'Batwoman' after just one season.
The former Batwoman couldn't be happier to see the role go to 'an amazing Black woman.'
Leslie is the first Black actress to play the superhero in a live-action TV series or film.
Showrunner Caroline Dries promises that the character, the first lesbian superhero on primetime TV, won't be erased.
ET is recognizing those who had an impact in the entertainment industry and helped shape pop culture over the past year.
The post comes a week after the actress confirmed she would be departing The CW series.
The actress is vacating the titular role on The CW superhero drama.
ET exclusively debuts a first look from Sunday's return episode.
The series returns Sunday, April 26 at 8 p.m. ET/PT on The CW.