Supergirl

Real name: Kara Zor-el. The daughter of Jor-el's brother, Zor-el and his wife, Allura. She is Superman's cousin. Kara was born in deep space aboard the fragment of Krypton containing Argo City enclosed in a protective bubble. Upon it's tragic destruction by a meteror storm, she was rocketed to Earth as a teen where she first met her famous cousin, Superman. Supergirl was his secret emergency weapon when he was away on a mission and was unable to respond to a distress signal. Supergirl kept her true nature hidden under the secret identity of Linda Lee, an orphan at Midvale Orphanage. She finally was adopted and revealled to the world by Superman in an exciting serial in the pages of Action Comics. Supergirl is a major character of the mythos and her feats and kindness are legend.