All Star Comics in the context of "Justice Society of America"

Power Girl, also known as Kara Zor-L, Karen Starr, and Paige Stetler, is a superheroine appearing in American comic books by DC Comics, making her first appearance in All Star Comics #58 (January/February 1976). Power Girl is the cousin of the superhero Superman, but from an alternate universe in the fictional multiverse in which DC Comics stories are set. Originally hailing from the world of Earth-Two, first envisioned as the home of DC's wartime heroes as published in 1940s comic books, Power Girl becomes stranded in the main universe where DC stories are set, and becomes acquainted with that world's Superman and her own counterpart, Supergirl.

In common with Supergirl's origin story, she is the daughter of Superman's aunt and uncle and a native of the planet Krypton. The infant Power Girl's parents enabled her to escape the destruction of her home planet by placing her in a rocket ship. Although she left the planet at the same time that Superman did, her ship took much longer to reach Earth-Two. On Earth, as with other Kryptonians, Power Girl discovered she possessed abilities like super strength, flight, and heat vision, using which she became a protector of innocents and a hero for humanity. Though the specifics of how vary over subsequent retellings, Power Girl is later stranded on another Earth when a cosmic crisis affects her home of Earth-Two, and later carves out a separate identity for herself from her dimensional counterpart Supergirl once they are forced to coexist.

Wonder Woman is a superheroine appearing in American comic books published by DC Comics, the daughter of Zeus and Hippolyta. The character first appeared in All Star Comics #8, published October 21, 1941, with her first feature in Sensation Comics #1 in January 1942. She was created by the American psychologist and writer William Moulton Marston (pen name: Charles Moulton), and artist Harry G. Peter in 1941. Marston's wife, Elizabeth, and their life partner, Olive Byrne, are credited as being his inspiration for the character's appearance. She is one of the first DC superheroes and is one of the strongest superheroes of all time. The Wonder Woman title has been published by DC Comics almost continuously ever since.

In her homeland, the island nation of Themyscira, her official title is Princess Diana of Themyscira. When blending into the society outside her homeland, she sometimes adopts her civilian identity, Diana Prince. Wonder Woman's original/first origin story dates from the Golden Age of Comic Books, which relays that she was sculpted from clay by her mother, Queen Hippolyta, and given a life as an Amazon and Olympian along with superhuman powers as gifts from the Greek gods. In the 2010s, DC introduced an alternative/new origin, a new canon origin for Wonder Woman in which Diana has become the biological daughter of Zeus and Hippolyta, her origin has changed since then, replacing the clay origin, and this current canon retconned origin is also used in her film adaptation. The character has also changed in her depiction over the decades, including briefly losing her powers entirely in the late 1960s; by the 1980s, artist George Perez gave her an athletic look and emphasized her Amazonian heritage. She possesses an arsenal of magical items, including the Lasso of Truth, a pair of indestructible bracelets, a tiara which serves as a projectile, and, in older stories, a range of devices based on Amazon technology.