Kara
Danvers is a DC character and Superman's cousin. She assumes her hero identity as Supergirl in her spare time.
Kara was born on the planet Krypton, just like her cousin
Kal-El.
Her alien name is
Kara Zor-El. Kara Danvers is her Earth name because of the Danvers family, who raised her on Earth since she came to our planet.
She is the protagonist of the TV series Supergirl since 2015.