Supergirl is a female counterpart to Superman. As his cousin, she shares his super powers and vulnerability to Kryptonite. She was created by writer Otto Binder and designed by artist Al Plastino in 1959. She first appeared in the Action Comics comic book series and later branched out into animation, film, television, and merchandising. In May 2011, Supergirl placed 94th on IGN's list of the Top 100 Comic Book Heroes of All Time.
Supergirl (Kryptonian name Kara Zor-El) plays a supporting role in various DC Comics publications, including Action Comics, Superman, and several comic book series unrelated to Superman. In 1969, Supergirl's adventures became the lead feature in Adventure Comics, and she later starred in an eponymous comic book series which debuted in 1972 and ran until 1974, followed by a second monthly comic book series titled The Daring New Adventures of Supergirl, which ran from 1982 to 1984.
Supergirl dies in the 1985 limited series Crisis on Infinite Earths, and DC Comics subsequently rebooted the continuity of the DC Comics Universe, reestablishing Superman's character as the sole survivor of Krypton's destruction. Following the conclusion of Crisis on Infinite Earths, several different characters written as having no familial relationship to Superman have assumed the role of Supergirl, including Matrix, Linda Danvers, and Cir-El. Following the cancellation of the third Supergirl comic book series, starring the Linda Danvers version of the character, a modern version of Kara Zor-El was reintroduced into the DC Comics continuity in issue #8 of the Superman/Batman comic book series titled "The Supergirl from Krypton" (2004). The modern Kara Zor-El stars as Supergirl in an eponymous comic book series, in addition to playing a supporting role in various other DC Comics publications.