Season 2 (Supergirl)

The second season of Supergirl premiered on The CW on October 10, 2016. It took place in conjunction with the fifth season of Arrow, the third season of The Flash and the second season of DC's Legends of Tomorrow.

Introduction

 * "When I was a child, my planet Krypton was dying. I was sent to Earth to protect my cousin. But my pod got knocked off course and by the time I got here, my cousin had already grown up and become... Superman. I hid who I really was until one day when an accident forced me to reveal myself to the world. To most people, I'm a reporter at CatCo Worldwide Media. But in secret, I work with my adoptive sister for the D.E.O. to protect my city from alien life and anyone else that means to cause it harm. I am Supergirl."

Main cast

 * Melissa Benoist as Kara Danvers/Supergirl
 * Mehcad Brooks as James Olsen/Guardian
 * Chyler Leigh as Alex Danvers
 * Jeremy Jordan as Winn Schott
 * Floriana Lima as Maggie Sawyer
 * Chris Wood as Mon-El/Mike Matthews
 * David Harewood as J'onn J'onzz/Martian Manhunter and Hank Henshaw/Cyborg Superman

Special guest cast

 * Helen Slater as Eliza Danvers
 * Dean Cain as Jeremiah Danvers
 * Tyler Hoechlin as Clark Kent/Superman
 * Calista Flockhart as Cat Grant
 * Lynda Carter as President Olivia Marsdin
 * Laura Benanti as Alura Zor-El
 * Grant Gustin as Barry Allen/The Flash
 * Carlos Valdes as Cisco Ramon/Vibe
 * Teri Hatcher as Rhea

Recurring cast

 * Ian Gomez as Snapper Carr
 * Katie McGrath as Lena Luthor
 * Brenda Strong as Lillian Luthor
 * Andrea Brooks as Eve Teschmacher
 * Sharon Leal as M'gann M'orzz/Miss Martian
 * Frederick Schmidt as John Corben/Metallo
 * Tamzin Merchant as Lyra Strayd

Confirmed plot points

 * Episode 18,, will tackle the topic of "the importance of journalism, and the importance of journalism ethics".
 * According to an interview with Chris Wood, Mon-El will get a superhero costume.

Confirmed new characters

 * Nick Farrow: The son of a famous reporter who is looking to make a name for himself in the news world.