Alexandra Daddario

Although this actress has starred more recently and has only big screen appearances scheduled for the future, she did made an impact (and a hot one it was) in True Detective "“ and Supergirl is one hot superheroine! So given her very successful role in the Matthew McConaughey and Woody Harrelson drama series, it means that she is also interested in TV roles "“ as long as the script is right and the character is compelling"¦

Candice Accola

Candice Accola is Caroline Forbes in The Vampire Diaries "“ but this isn't the only TV series in which she has appeared or actually starred. But as great as Caroline is in the aforementioned series, the actress should be in the highlight of her own TV series "“ and Supergirl might just be her role.

Candice Accola has the acting chops and she can pull it off as an action star. But the question is: will she leave The Vampire Diaries for Supergirl, a series that hasn't proven its worth yet?