[once The Flash is revealed to be in National City]

Cat Grant: There's a new superhero in National City. This is huge; direct competition for Supergirl.

Kara Danvers: He doesn't have to be... competition.

Cat Grant: Would you prefer... a sidekick?

Barry Allen: No, not a sidekick. More like an equal, or an ally...

[Winn pats Barry's shoulder]

Barry Allen: ... a new partner, maybe?

[Cat stares stoically; Barry nods]

Barry Allen: Speaking was the wrong choice. I see that now.

Kara Danvers: [Season 1 Opening] 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 time I got here, my cousin had already grown up and become Superman. And so I hid my powers until recently when an accident forced me to reveal myself to the world. To most people I'm assistant at Catco Worldwide Media. But in secret, I work with my adoptive sister for the DEO to protect my city from alien life and anyone else that means to cause it harm. I am Supergirl.

Superman: See, now... if the bullets don't work, right, why the punching? I just never understood that.

[season 3 intro]

Kara Danvers: My name is Kara Zor-El. I'm from Krypton. I'm a refugee on this planet. 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 adopted sister for the DEO to protect my city from alien life and anyone else that means to cause it harm. I am Supergirl.