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.

Coolot1's ideas

 * Courtney Whitmore / Stargirl appears in DC: Unlimited Rebirth, voiced by Dove Cameron. Along with her same powers and abilities from the comics, this version is one of the Daughters of Wonder Woman, and was one of Diana's adopted children; she was adopted by Diana after her parents were killed during an riot in Cale Pharmaceuticals caused by Intergang and orchestrated by Tobias Whale, to which Courtney currently blames both the company's CEO Veronica Cale and Whale for. Her Cosmic Staff (renamed the Star of Rao) was created by the smithgod Hephaestus and the Guardians of Oa in homage of Superman after he helped stop Ares' invasion of Themyscira and Metropolis. She is the second youngest of the Daughters. Her costume is a one-piece leotard version of her comic book outfit, with her mask replaced for a star-shaped tiara. She is also the potential love interest of Billy Batson / Shazam.

Moon Silvight's ideas
See also: Stargirl (Injustice 2 DLC)
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Joint ideas

 * Stargirl is one of the titular protagonists in the comic book series Starfire and Stargirl. This version is depicted as the adopted daughter of Princess Diana / Wonder Woman who grew up to become a crown princess of Themyscira along with her adoptive sisters Cassandra and Andromeda. Her Cosmic Staff is a creation of the Guardians of the Universe, and shares the same powers and capabilities of a Green Lantern's power ring.