Fight or Flight

"I'm... I'm still trying to figure out what being Supergirl means. Who I am. And now I know, I'm not Superman's cousin, I'm Supergirl. And if I'm gonna be defined, it's gonna be by my victories and my losses, no one else's."

- Kara to James

Synopsis
Supergirl's powers are tested when Reactron, one of Superman's formidable enemies, arrives in National City and targets the young hero. Also, Cat plans to run an exposé on Supergirl.

Protagonists

 * CatCo Worldwide Media
 * Cat Grant
 * Lucy Lane
 * Super Friends
 * Supergirl (Kara Danvers)
 * James Olsen
 * Winn Schott
 * DEO
 * Alex Danvers
 * Hank Henshaw (J'onn J'onzz)
 * Maxwell Lord

Antagonists

 * Reactron (Ben Krull)

Other Characters

 * Alura Zor-El
 * Zor-El
 * Superman
 * Caitlyn Jenner
 * CatCo Worldwide Media
 * Dave
 * Ed Flaherty
 * DEO
 * Vasquez
 * Lord Technologies
 * Carl
 * Alyssa Krull
 * James Bond
 * Lois Lane

Teams and Organizations

 * Noonan's
 * CatCo Worldwide Media
 * The Day After Tomorrow
 * National City Beanery
 * Daily Planet
 * KPJT News
 * Vanity Fair
 * Pennysaver
 * DEO
 * NCH
 * Highway Patrol
 * Home Roasted Coffee Shack
 * Super Friends
 * Lord Technologies
 * Bakerline Nuclear Power Station
 * Dr Pepper
 * KQBC
 * NCPD

Species

 * Humans
 * Kryptonians
 * Green Martians
 * Ghosts

Objects and Concepts

 * Supergirl Suit
 * Cape
 * Kara Danvers' Glasses
 * Reactron Suit
 * Super Rail
 * DEO Satellite
 * Code Gray
 * DEO Uniform
 * Superman Suit
 * Signal Watch
 * Bulletproof Dress
 * Kara Zor-El's Pod
 * Homeland

Locations

 * Earth-38
 * Earth
 * United States of America
 * California
 * National City
 * Noonan's
 * CatCo Plaza
 * Super Friends Office
 * National City Beanery
 * Reactron's Scrapyard
 * Home Roasted Coffee Shack
 * Lord Technologies Research Facility
 * Bakerline Nuclear Power Station
 * Maxwell Lord's Penthouse
 * Hammersmith Tower
 * Kara Danvers' Loft
 * DEO Desert Facility
 * Metropolis
 * Mount Everest
 * Krypton