In DC comics and televison, Supergirl's name was Kara Zor-El. She was the cousin of Kal-El, aka Superman. She was an inhabitant of Argo City, which survived the destruction of Krypton. The inhabitants eventually died from radiation poisoning, with Kara being the only survivor. She was adopted by the Danvers family on Earth, and went by Kara Danvers there.
In the reboot of Battlestar Galactica, Kara Thrace, aka Starbuck, was a member of Galactica's crew. Her mother, Socrata Thrace was a member of the Colonial Marines and her father, Dreilide Thrace was a pianist. Kara was abused as a child. After her dream of becoming a professional Pyramid Ball player ended with a knee injury, she joined the military and became a pilot. She was romantically involved with Zak Adama, and they were engaged when he was killed. She liked to play cards and tended to drink a lot. She had a strong faith in the Gods. She later married Samuel Anders.
Kara is a variant of the Italian name Cara, which means 'beloved.' In 2014, Kara was the 442nd most popular name for girls in the U.S.