Supergirl is an American superhero fiction action-adventure drama television series developed by Ali Adler, Greg Berlanti and Andrew Kreisberg, that airs on CBS. It is based on the DC Comics character Supergirl (Kara Zor-El), created by Otto Binder and Al Plastino, and stars Melissa Benoist in the title role. Supergirl is a costumed superheroine who is the biological cousin to Superman and one of the last surviving Kryptonians. The series was officially picked up on May 6, 2015 after receiving a series commitment in September 2014, and premiered on October 26, 2015. Supergirl received a full season order of 20 episodes on November 30, 2015.