Supergirl was a spinoff film to The Metropolis Marvel and it's sequels, and the first Superman spinoff film. The film was directed by Zack Snyder, produced by Joss Weadon, and written by Shane Black. The film starred Stefanie Scott as Kara Kent/Supergirl, Shaquille O'Neal as John Henry Irons/Steel, and Mark Hamill as Toyman.
- Emil Hamilton and Amanda Waller will appear. (TRUE)
- Cole Sprouse will cameo as Braniac 5.
- Hamilton and Waller's appearances will be linked to their envolvement in Cadmus. (TRUE)