Stargirl

Stargirl (Courtney Whitmore), is a fictional superhero created by Geoff Johns and Lee Moder who appears in American comic books published by DC Comics. The character's name, appearance, and personality were patterned after Johns' sister Courtney, who died in the explosion of TWA Flight 800 in 1996.

Courtney Whitmore was originally known as the second Star-Spangled Kid, but she began using the name "Stargirl" after she was presented with the Cosmic Staff by Jack Knight.

Courtney Whitmore, stepdaughter of Pat Dugan, finds the original Star-Spangled Kid's gear in her stepfather's belongings. She dons the costume to annoy Dugan, as she resents his marrying her mother and moving the family from Los Angeles to Blue Valley, Nebraska. Dugan, a skilled mechanic, designs and builds S.T.R.I.P.E., a robotic suit that he uses to accompany and protect her.

During her time in Blue Valley, her frequent nemesis is the young villainess known as Shiv, daughter of the immortal Dragon King. Their most recent rematch was in Infinite Crisis, on a page added to the hardcover edition.

Iago PUC's ideas

 * Stargirl is a recurring character in Iago PUC's Justice League/Teen Titans Animated Universe, voiced by Natalie Lander. A young scout member of the Justice League and honorary member of the Teen Titans, this version's Cosmic Staff shares powers and functions equivalent to those of a Lantern's power ring, such as working only for those who were chosen to wield; it is also revealed that the Staff is a creation of the Guardians of Oa. She is one of Supergirl's closest friends, and is in a romantic relationship with Green-later-White Lantern Corps member Kyle Rayner. She also has a cousin and surrogate brother named Felix (voiced by Robbie Daymond), who donned a Cosmic Helmet with the same functions of Courtney's Cosmic Staff and become Star Hunter, and is a member of Terra's Knights of Rao.
 * Stargirl is a playable character in Marvel/DC Heroes Unite!, voiced by Natalie Lander.