Melissa Benoist

Melissa Benoist is an American actress, and she portrays Kara Zor-El/Kara Danvers/Supergirl in the lead role on Supergirl and she will portray Kara in a special guest starring role in the third season of the CW's The Flash.

The Flash

 * "Welcome to Earth-2" Supergirl (vision)

Trivia

 * Benoist is the real life wife of Blake Jenner.